Ok, so this is a cross post from the longines forum - I do apologise, but I have not had much response and been asked to post here. Here is the thread in its entirety:
And the contents of my post (images are on the thread):
I have picked up a Longines Admiral with a calibre 505.
Happy to upload pictures, but it does not have any other identifying marks on the movement.
It does need a new stem and crown however.
Ranfft.de accurately shows the movement: bidfun-db Archive: Watch Movements: Longines 505 (Record 1955-2)
and the stem reference number, W3265
I am however at a loss as to where I can source the stem from or what the correct part is.
I have seen several listings:
1. Longines part 401 cal 505 from Canada
2. Longines part 401 cal 505 from Germany
3. Longines part 404 cal 505 from Malta
4. Longines part 404 cal 505 from Hungary
So what I can take from this is, there are various parts at various price points, however the part number 401 and 404 confuse me. One appears to be some form of clip on stem (with male and female parts) and the other is a regular stem.
The stem that came with the watch is a plain old boring regular stem, but the stem does not stay in the watch, nor does it change the time (as if it does not engage the gear for the time change), however depressing it into the movement does do a quick date change. What I did was to slowly inch the stem (millimeter by millimeter) out and wind a little, so at various places it engages the winding gear and it winds the watch, but it does not set the time at all. and nothing stops the stem from pulling out fully.