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Added a couple new watches to my Seiko collection last night I thought I would share. The first is somewhat underwhelming at first glance, and what does one say about an underwhelming watch? It has good bones, it’s a good foundational piece, etc. etc. Well in my case none of the above. The watch was a match to one I already own a “Seiko 5 Automatic 6119-8400” August 1969, WATER PROOF with three mouth spread between the two watches probably as close as ones going to find without divine intervention. Why do I want two? I don’t, I want three…lol anyone that caught my interdiction will know I am on a mission, put together three matching collection of vintage Seiko’s to pass on to my three sons when I am not around. So as far as this watch goes, I am 33% away from my goal. Found in the UK. Second watch is just fun and considered a TV watch and one that screams 1968-1970 all over again.This is a Seiko 5 6119-5400, Square Automatic day date 21 jewels, original wristband. It has an interesting band that is claimed to be original wristband and found in Egypt. I generally try to keep my collection grounded around the infamous 6139, 6138 series but one has to occasionally push the boundary. All the best, Will

Hello, Adding onto what @oldhippy has posted, here are the Marvin 580 numbers that you can use to match the Bestfit numbers. Its not a word doc, and if you need help with a particular part let me know and I can look up more specific info. J

Here is a list of all the Marvin 580 parts along with makes of those parts that are interchangeable with other makes and cal. This is from the Bestfit catalogue. I have put it in a Word doc for you. Case Caliber Marvin 580.docx

Yeah I know mate! I’m just looking for another movement for it thats all, it’s not mine, it’s my mates! Sent from my iPhone using Tapatalk

A likely reason is that the square hole in the ratchet wheel has become rounded and is therefore not engaged properly with the barrel arbor. The stem may well result in the turning of the ratchet wheel as expected but this may not actually be turning the barrel arbor properly. [However because the screw is directly in the arbor then if you use this method then the winding does seem to work]. Also obviously check that the ratchet wheel is properly seated. Initially I would suggest removing the ratchet wheel screw and gently turning the stem and observe what happens to the arbor and ratchet wheel. [The ratchet wheel should not pop off in the absence of the screw if you are gentle but if in doubt you can always hold the wheel in place with (brass) tweezers].

Please excuse my gorilla arms!!!