Seeing Dan Pellegrini's name pop up on a World Timers thread prompted me to pass on that Dan has now turned his beady eye onto Bell-Matics. He's set up a web page with hundreds of photos of dials and case backs. https://www.seikoworldtime.com/scanner/bellmatics He's also running a Google Document with a ton of info on the Bells. https://docs.google.com/document/d/1yHcU-A--EWiivGl8HU3W3cT0lxOweii5bJxBLn8aZvc/edit?usp=drivesdk I think he's going to use all the information gathered to produce a full website on the Bell-Matic. If anyone has anything interesting to add to it he seems happy to have a chat. Word of warning though, he's very diligent and takes his task very seriously so make sure you have plenty of evidence to back you up! Below is a photo of my 1967 4006-7000 which is a franken, you can use Dan's data to figure out why.