Need Experts To Find Infos On A Rare .410 Shotgun (acciaio Vickers - Canna Cromata)

[TheZreturns]

Hi All, I received as a heritage, a singleshot break-action .410 shotgun.
I've been told it's a rare Italian imported shotgun.

I would love to shot with it, but I can't find ANYWHERE on the gun, informations about which lenght of .410 ammunition, I should put in there...

All we can see on the shotgun is:
- On the top part of the bore, the number #36.
- nice metal works with drawings and all.
- On the left side, we can read:
"ACCIAIO VICKERS"

and under it, we can read:
"CANNA CROMATA"

Under that, is the serial number of the firearm..

Does ANYBODY HERE, can help me identifiy where this weapon is coming from, and what is it.

PLUS I WOULD LOVE TO KNOW WHICH KIND OF .410 AMMUNITION I SHOULD PUT IN THERE...

Here's 2 pictures of the markings:

 

[slicknick]

I'd wander over into the shotguns area

 

[TheZreturns]

Thanks for the heads-up... I'll do that.

 

[tiriaq]

Kassnar imported different lines of sporting goods. Do a google, you should be able to find out more about the company.
I think the markings refer to Vickers steel, and a chromed bore.
The proof marks should indicate chamber length, if not, measure the chamber.

 

[TheZreturns]

No marks are there about the chamber length... I'll have to mesure it...
Here's two other pictures (black square on 2nd pic, is the place where the S/N is...)

 

[H4831]

Sure is a neat looking little gun! As you know, the chambers are tapered at the end, but it should be easy to see if it is for 2½ or 3 inch.