![[PukiWiki]](image/pukiwiki.png "[PukiWiki]")
From https://thewatchforum.co.uk/index.php?/topic/95876-japanese-giant-goes-missing-ricoh-watches/
The first volume movement was the cal570, a conventional looking quartz movement, well executed and rather similar to its contemporary Orient cal52950 - perhaps a sign of cooperation or plaigiarism between the two companies. Watches with this movement date from the start of 1974 to perhaps 1976.
