I received this neat old Seiko in a lot of watch parts and pieces about a year ago. The back cover was not marked so when I got around to removing the cover sometime later I was surprised to find that the movement had no caliber marked on it either. I know Seiko did not mark some movements from the 60's. No problem I have the manuals part one and two. I flipped through every page and there is no 15 jewel movement in the book anywhere with this configuration. The closest model I can find is the 21 jewel model 560. Everything look the same appearance wise.
Now onto part two. It appears this model which has the name Sports- on the dial and the rest obscured appears to be of the design that the movement is meant to be removed through the front. Normally I would just remove the old plastic crystal and replace it with a new one but how can you look up the crystal if you do not even know what caliber or model the watch is?




Now onto part two. It appears this model which has the name Sports- on the dial and the rest obscured appears to be of the design that the movement is meant to be removed through the front. Normally I would just remove the old plastic crystal and replace it with a new one but how can you look up the crystal if you do not even know what caliber or model the watch is?



