Can someone comment on this (for me unknown) Landeron movement and the handsize related to it.

I acquired a watch most likely from the 30s or early 40s without minute/hour/second hands.

The diameter of the watch is around 37.8mm and the movement seems to be a huge Landeron movement.
Size of the movement is between 34-35mm and it has a 7 coloumn wheel.

It has 2 Pushers, 30 Minute Subcounter on 3 with Sub Second Counter on 9.

I would have thought it is a Landeron 3 (34.7mm diamter) - but it is not adding up 100%
Movements (grail-watch.com)


Cal 3: Landeron 3 (grail-watch.com)



Can some expert please elaborate which Landeron movement this - and then it would be good to know the dimension of the Hands.
Would really appreciate the help.

I checked also on Rannft and couldnt find the exact movement - as on Rannft they usually indicate Handsize.
Calibers (ranfft.org)

Hello, the movement looks not to be complete. I am not sure what movement just looking at it here. I would have to check some books.

this seems same movement

https://www.ebay.ch/itm/32604534066...uid=974itNR2RtO&widget_ver=artemis&media=COPY

Looks like the coupling clutch and wheel are missing, but at least the jumper spring is there and looks ok, they can get up expensive.