Question about B&N buckle

[Alexander]

Hello

I bought this Berg & Nolte buckle the other day, along with an unmarked leather belt (though owners name and 36017 (Feldpost?) handwritten on it). The buckle is an 1941 dated example. However the leather tab doesn't have the oval marker mark that I have seen on other B&N buckles. Instead it appears to have a RZM number which I cannot read except for the beginning 'R' and the end numbers which appear to be 0/0204. Is this a correct buckle and tab for this company? I thought that the B&N RZM number was M4/30.

Many thanks for any help offered.

[kirby]

It is a RBN number not a RZM number. I have had belts with RBN markings but not leather tabs. The tab might have been added.

[Ben Evans]

I concur with Kirby, original buckle but I have never seen a RB numbered tab on a buckle so not sure if a period addition or not

[Alexander]

Thanks for the replies.