As far as I am aware and I thought it was common knowledge the 325,425,525,625 and the present 725 Brownings are all made by Miroku in Japan. I think the Citori model of the time is based on those Miroku made models but is heavier in the barrels and stocked lower than those Brownings intended for the U.K. market.
The B125 is a Miroku parts shotgun which is finished in Belgium and has the fixed forend akin to the B25 whereas the 325 etc Miroku built shotguns all have a detachable forend.
The B25 guns were manufactured completely in Belgium and have a slightly more complex mechanism than the Miroku built shotguns.
The Miroku range of sporting guns are the MK60 fixed 1/4 3/4 choked guns ,the MK70 multichoked and the MK38 multichoke.
I couldnt say if your gun serial number starting 525 indicates that it is a 525 Miroku built Browning.
If you were to look on the UK guntrader site you will be able to see pictures of the above models for sale which may aid in clarifying.
Last edited by Konor3inch; 11/20/20 02:04 PM. Reason: Addition
