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#author("2025-05-27T22:54:22+01:00","default:admin","admin") #author("2025-06-06T13:03:32+01:00","default:admin","admin") #ref(550002-15.jpg,right,around,zoom,0x350); Introduced about 1972, using calibre [[550]]. Available in stainless steel or gold plated. Advertised in Feb 1973 "Playboy" magazine as the “Ricoh quartz crystal wrist computer, guaranteed accurate to 5 seconds a month ... miniature miracle ... guaranteed for two years” for $295 (the mechanical watches carried a ten year guarantee) The 550002 features better accuracy than the [[550003]] (+-5 secs/month vs +-15 secs/month) despite using the same movement. There is a difference in cost reflecting this (¥93,000 vs ¥55,000) *Cases [#b85f80e7] -Stainless steel - 93,000円 - $265 in 1973 -Gold plated - 118,000円 - $295 in 1973 -(The most expensive mechanical watch in the same advert is $95) *Dials [#fa967213] -White stone at 12 -Day & date apertures at 6 -[[Tiger eye]] -Painted --Flat silver --Fading brown --Two tone gold or silver *Books [#tf8309ed] "... 550002 88,000 yen and "Tiger Eye" is 5 yen. In the company he is 55,000 March 1,000 students of course "iron". A wide variety of steel materials developed at the appropriate materials center... We use "Tiger Eye," which is made from "Requartz." It was announced that it would be released from the end of August. A new crystal watch should cost 50,000 yen for the first time." *Example serial numbers - Case - Movement [#zb0cd845] Note first digits range from 1 to 7, second digits are 1 or 2, third digits are 2 or 3 ,''Case number'',''Movement number'',''Case material'',''Dial'',''Date'',''Notes'' ,122293,020042,Stainless steel,Two tone silver without stone 05-326,Dec 1972,Original bracelet [[jrussbeauchamp.com>http://www.jrussbeauchamp.com/item.php?id=6187]] ,122342,,Stainless steel,Two tone silver without stone,, ,122376,011346,Stainless steel,Two tone silver without stone,, ,122646,,Stainless steel,Two tone silver without stone,, ,122797,022966,Stainless steel,Fading brown dial,Sep 1972, ,123098,,Stainless steel,Silvered without stone,, ,123117,,Stainless steel,Silvered without stone,, ,123148,,Stainless steel,Fading brown without stone,, ,123464,,Stainless steel,Silvered without stone,,Original flexible bracelet ,123464,016286,Stainless steel,Silvered without stone,Dec 1972,Original flexible bracelet ,123509,015227,Stainless steel,,Jul 1972,Original bracelet ,123528,016531,Stainless steel,Flat white without stone,Jul 1972,[[jrussbeauchamp.com>http://www.jrussbeauchamp.com/item.php?id=5958]] ,123594,013148,Stainless steel,Silvered without stone,Sep 1972,Original bracelet [[jrussbeauchamp.com>http://www.jrussbeauchamp.com/item.php?id=6149]] ,123605,015227,Stainless steel,Flat white without stone,Jul 1972, ,123???,,Stainless steel,,Jul 1972, ,312205,,Stainless steel,Silvered,, ,312207,010435,Stainless steel,Silvered 11-327,Nov 1972,Original bracelet [[jrussbeauchamp.com>http://www.jrussbeauchamp.com/item.php?id=6103]] ,312311,024597,Stainless steel,Two tone silvered with stone 10-327,Sep 1972,[[jrussbeauchamp.com>http://jrussbeauchamp.com/item.php?id=5952]] ,312390,022569,Stainless steel "550002 CA",Silvered with stone 11-327,Dec 1972,[[jrussbeauchamp.com>http://www.jrussbeauchamp.com/item.php?id=5989]] ,312603,024188,Stainless steel “550002 CA”,,Sep 1972,[[YouTube:https://youtu.be/ng4ypGF0oOs]] ,312668,019518,Stainless steel "550002 CA",Two tone silvered,Dec 1972,Original flexible bracelet [[jrussbeauchamp.com>http://jrussbeauchamp.com/item.php?id=6180]] ,312706,,Stainless steel "550002 CA",Black with stone 11-327,, ,312928,,Stainless steel "550002 CA",Two tone silvered,,Original bracelet ,313174,018007,Stainless steel "550002 CA",Plain silvered 11-327,Dec 1972,Original flexible bracelet [[jrussbeauchamp.com>http://www.jrussbeauchamp.com/item.php?id=6197]] ,313224,,Stainless steel “550002 CA”,Plain silvered,, ,313465,,Stainless steel “550002 CA”,Two tone painted,, ,313468,012683,Stainless steel “550002 CA”,Two tone painted,Oct 1972, ,313709,024887,Stainless steel “550002 CA”,Two tone silvered,, ,322225,014675,Gold plated,Two tone gold with stone 09-327,Aug 1972,[[jrussbeauchamp.com>http://www.jrussbeauchamp.com/item.php?id=5938]] ,322389,015145,Gold plated,Brown fade,Aug 1972,Gilt open bracelet [[jrussbeauchamp.com>http://jrussbeauchamp.com/item.php?id=5377]] ,322478,,Gold plated,Two tone gold,Sep 1972, ,323264,021906,Gold plated “550002 CA”,Brown fade with stone 10-327,,Gilt mesh bracelet [[jrussbeauchamp.com>http://jrussbeauchamp.com/item.php?id=5712]] ,323393,,Gold plated "550002 CA",,,Gilt open bracelet ,422295,,Stainless steel,[[Tiger eye]],, ,422372,,Stainless steel,[[Tiger eye]] signed "Tiger eye",,93.000 yen tag ,522230,,Gold plated "550002 CA",[[Tiger eye]] signed "Tiger eye",, ,622112,-,Stainless steel “550002 BA”,-,Dec 1972,Case only with protective sticker ,622120,018866,Stainless steel "550002 BA",Deepest blue with stone,Jan 1973,Original bracelet [[jrussbeauchamp.com>http://www.jrussbeauchamp.com/item.php?id=6000]] ,622166,020464,Stainless steel "550002 BA",Two tone silver,Dec 1972,Original bracelet [[jrussbeauchamp.com>http://www.jrussbeauchamp.com/item.php?id=6078]] ,622170,,Stainless steel “550002 BA”,Two tone silver,, ,622272,,Stainless steel “550002 BA”,,, ,622399,012980,Stainless steel "550002 BA",Two tone silvered,Dec 1972?,Original flexible bracelet [[jrussbeauchamp.com>http://www.jrussbeauchamp.com/item.php?id=6110]] ,722353,,Gold plated "550002 BA",Two tone gold,, ,722439,,Gold plated "550002 BA",Two tone gold,,Original bracelet ,??????,017906,Gold plated,Two tone gold with stone,, ,??????,014283,Gold plated "550002 BA",Two tone gold with stone 09-327,,Original flex bracelet Instagram could be 014233? ,??????,,Stainless steel,Two tone silvered 09-327,,Crazywatches.pl ,??????,,Stainless steel,Two tone silvered,,Doensen book ,,,,,,''45 watches recorded'' -Earliest recorded watch July 1972 - 123605 -Latest recorded watch Jan 19713 - 622120 *Example serials [#vf00670d] **122293 [#w0cf8d78] #ref(550002-122293-2.jpg,right,around,zoom,0x250); #ref(550002-122293-1.jpg,zoom,0x250); **122342 [#tfa482d1] #ref(550002-122342-2.jpg,right,around,zoom,0x250); #ref(550002-122342-1.jpg,zoom,0x250); **122376 [#y8100f6c] #ref(550002-122376-2.jpg,right,around,zoom,0x250); #ref(550002-122376-1.jpg,zoom,0x250); **122646 [#y64f3374] #ref(550002-122646-2.jpg,right,around,zoom,0x250); #ref(550002-122646-1.jpg,zoom,0x250); **122797 [#df172d6c] #ref(550002-122797-2.jpg,right,around,zoom,0x250); #ref(550002-122797-1.jpg,zoom,0x250); **123098 [#b9bc64dc] #ref(550002-123098-2.jpg,right,around,zoom,0x250); #ref(550002-123098-1.jpg,zoom,0x250); **123117 [#p1c87448] #ref(550002-123117-2.jpg,right,around,zoom,0x250); #ref(550002-123117-1.jpg,zoom,0x250); **123148 [#ua8ebdf6] #ref(550002-123148-2.jpg,right,around,zoom,0x250); #ref(550002-123148-1.jpg,zoom,0x250); **123464 [#v0bc4a40] #ref(550002-123464-2.jpg,right,around,zoom,0x250); #ref(550002-123464-1.jpg,zoom,0x250); **123509 [#ca4dad4c] #ref(550002-123509-2.jpg,right,around,zoom,0x250); #ref(550002-123509-1.jpg,zoom,0x250); **123528 [#r577831f] #ref(550002-123528-2.jpg,right,around,zoom,0x250); #ref(550002-123528-1.jpg,zoom,0x250); **123594 [#p31466b3] #ref(550002-123594-2.jpg,right,around,zoom,0x250); #ref(550002-123594-1.jpg,zoom,0x250); **123605 [#weea88ff] #ref(550002-123605-2.jpg,right,around,zoom,0x250); #ref(550002-123605-1.jpg,zoom,0x250); **312205 [#k6d5b78a] #ref(550002-312205-2.jpg,right,around,zoom,0x250); #ref(550002-312205-1.jpg,zoom,0x250); **312207 [#kb072784] #ref(550002-312207-2.jpg,right,around,zoom,0x250); #ref(550002-312207-1.jpg,zoom,0x250); **312311 [#g3e9317b] #ref(550002-312311-2.jpg,right,around,zoom,0x250); #ref(550002-312311-1.jpg,zoom,0x250); **312390 [#aeda5f0b] #ref(550002-312390-2.jpg,right,around,zoom,0x250); #ref(550002-312390-1.jpg,zoom,0x250); #ref(550002-312390-3.jpg,zoom,0x250); **312668 [#a888549b] #ref(550002-312668-2.jpg,right,around,zoom,0x250); #ref(550002-312668-1.jpg,zoom,0x250); **312706 [#maae5390] #ref(550002-312706-2.jpg,right,around,zoom,0x250); #ref(550002-312706-1.jpg,zoom,0x250); **312928 [#j7d322ba] #ref(550002-312928-2.jpg,right,around,zoom,0x250); #ref(550002-312928-1.jpg,zoom,0x250); **313174 [#lbee5b74] #ref(550002-313174-2.jpg,right,around,zoom,0x250); #ref(550002-313174-1.jpg,zoom,0x250); **313465 [#r4a17a85] #ref(550002-313465-2.jpg,right,around,zoom,0x250); #ref(550002-313465-1.jpg,zoom,0x250); **313468 [#xbc66f26] #ref(550002-313468-2.jpg,right,around,zoom,0x250); #ref(550002-313468-1.jpg,zoom,0x250); **313709 [#jb3bbb2a] #ref(550002-313709-2.jpg,right,around,zoom,0x250); #ref(550002-313709-1.jpg,zoom,0x250); **322225 [#o043b5a3] With inscription, watch must've been 5 years old at the time #ref(550002-322225-2.jpg,right,around,zoom,0x250); #ref(550002-322225-1.jpg,zoom,0x250); **323265 [#h06b50b5] #ref(550002-323265-2.jpg,right,around,zoom,0x250); #ref(550002-323265-1.jpg,zoom,0x250); **323393 [#v73bede3] #ref(550002-323393-2.jpg,right,around,zoom,0x250); #ref(550002-323393-1.jpg,zoom,0x250); **422295 [#we747069] #ref(550002-422295-2.jpg,right,around,zoom,0x250); #ref(550002-422295-1.jpg,zoom,0x250); **422372 [#z99d3d25] #ref(550002-422372-2.jpg,right,around,zoom,0x250); #ref(550002-422372-1.jpg,zoom,0x250); **522230 [#s703dcc3] #ref(550002-522230-2.jpg,right,around,zoom,0x250); #ref(550002-522230-1.jpg,zoom,0x250); **622112 [#x4c5d3aa] Case only, no movement, protective sticker #ref(550002-622112-2.jpg,right,around,zoom,0x250); #ref(550002-622112-1.jpg,zoom,0x250); #ref(550002-622112-3.jpg,zoom,0x250); **622120 [#p77badf1] #ref(550002-622120-2.jpg,right,around,zoom,0x250); #ref(550002-622120-1.jpg,zoom,0x250); **622170 [#jdb2ed8c] #ref(550002-622170-2.jpg,right,around,zoom,0x250); #ref(550002-622170-1.jpg,zoom,0x250); **622272 [#f1e96fa2] #ref(550002-622272-2.jpg,right,around,zoom,0x250); #ref(550002-622272-1.jpg,zoom,0x250); **622399 [#ifc56650] #ref(550002-622399-2.jpg,right,around,zoom,0x250); #ref(550002-622399-1.jpg,zoom,0x250); **722353 [#zba634dd] #ref(550002-722353-2.jpg,right,around,zoom,0x250); #ref(550002-722353-1.jpg,zoom,0x250); **722439 [#mb6a3e34] #ref(550002-722439-2.jpg,right,around,zoom,0x250); #ref(550002-722439-1.jpg,zoom,0x250); **?????? [#ac53e1dd] Doensen book #ref(550002-2.jpg,zoom,0x250);
