Hello all, i am new to this forum
Couple of days ago i found this chronograph. It is missing one small part that resets chronograph.
Can anyone help me, what movement is this and from what year?

 

99% sure it is an old Landeron. Possibly a 14.5?

 

I am thinking Landeron too, but doesn't 14.5 mean size?
this movement is cca 340mm in diameter

 

14.5''' (lignes) is about 32.5mm.

I think 340mm diameter would be a clock .

 

yes I think it is supposed to be the size too. So a 14.5 with a diameter of 15 lignes (34mm)

Based on this site https://www.time2tell.com/database/landeron-14-5-15-5/
It was built with at least 2 different sizes (like the UG 285-287). Maybe they produce a 15''' version too?
The Landeron 15 exists but it is a monopusher.

 

I have read on some Italian, that this is Landeron Hahn cal. 46.
But i can't find pictures of that movement.

EDIT: Italian forum,

 

This Minerva looks like it has almost same dial