No pic of the muzzle, I'd have to wonder why.
25" in length is a nice even length for us USA folks but over there centimeters rule the day.

25" does come in at 63 1/2 cm. which sounds kind of nice & even. But that would mean the maker decided to produce the bbl length at a half centimeter cut off point.
Maybe for the US market some would say,,a nice even inch length..I don't know,,maybe?.

I'd think the orig length was more on the order of a plain 65cm length. which would pan out to just a bit over 25 1/2" on our yard stick.
Or a 66cm length originally which would measure out at at just a hair under 26inches on most anyones ruler.

A 1/2 inch,,or 1 inch cut from those respectively would still leave some choke in them as the specs say they have (.002/,004),, but would cut the most strict reduction in bore dia from the end.
I'm thinking they were probably 66cm length originally (25.98+") and that inch was cut to remove some damage leaving some choke in both. Just my guess though.

I'd still want a pic or two of the muzzle before spending any $$ there. I can be proven entirely wrong in my guess!

The gun has been totally refinished anyway,,wood and metal.
It's not hard to figure a few other things were done to doll it up for sale.
It was a nice gun as orig made for sure.

Just my observations.