I have been camping out by the mail box (well, not really) waiting for this one.
Looks a little JLC memvox imo. Shame about the little scratch, as otherwise the dial is perfect. These are uncommon enough that you take what you can get - you don't get the chance to be fussy. Doesn't detract when wearing it anyway, you really have to look for it.
Hands could do with a little TLC. The lume is behaving badly.
Sold as not working. Minor tweek once it arrived and all systems are go - shows a good trace on the timing machine now, so no need to service.
I fitted a nice NOS vintage camel strap and new crystal.
It is quite sophisticated, with a single winding and setting crown for all alarm and time functions. The single pusher is to cancel the alarm. When winding, the alarm is wound when the crown is rotated clockwise, and the mainspring is wound when rotating anti-clockwise. The alarm sets when the alarm spring is wound. The second position on the stem adjusts the alarm pointer, and the third position sets the hands. The winding mechanism features a rocker as in the Vulcain cricket that alternating barrels, depending on the direction of the winder.
Someone has mangled the adjustable stud holder! Perhaps from putting the back on in the wrong place (alarm pin). Still working fine, but fortunately I (now) have spares and will replace it. This is the MST 427 calibre.
It joins this one from 1953, which is being restored (posted here) for which I have found a completely appropriate and ultra rare MST417 movement - so the hammer issue is no more.
I wonder if there is anyone else in the world with both versions - these are uncommon maybe 1 or 2 a year on the 'bay and the 417 is - well, rare. I have yet to see one for sale.
It has been a good day. I can't really believe I have managed to find both.