One for the Longines experts . . . is this a 902 mvt.?

Posts
3,259
Likes
14,149
What is says on the tin, and if not, what is it?
Looks like a Landeron to me, perhaps a Landeron 48 or one of its derivatives
 
Posts
1,111
Likes
7,271
Looks like a Landeron to me, perhaps a Landeron 48 or one of its derivatives
Many thanks--latest info. is that it's a Landeron 51.