Hello Jacques
To be honest, I don't know anything about those collapsible Macro Industars, this is the only one I ever saw for sale.
To me it seems uncoated, serial is 2492 which is the lowest in the wiki.
I don't even know how this lens is supposed to work.
The wiki says some sort of extension tube is needed, maybe something like that?
http://www.ebay.com/itm/Macro-Extension-tubes-set-of-4-rings-FED-USSR-/281282704118?pt=US_Lens_Adapters_Mounts_Tubes&hash=item417dc172f6It's clearly post-war and I've never seen anything like a pre-war extension tube. So I'd guess all collapsible Macro-Industars are post-war, while the non-collapsable FED Macro lens was purely pre-war.