Where do I find the model # or Serial # on an old .410 ga shotgun made in japen?

Question

I have an old .410 gauge 3 inch barrel single shot shotgun that has the letters K.I.N. stamped on both sides made in Japen. I'm trying to find out some info on it like when it was made and maybe how much it would be worth but I'm not sure what the model # is or the Serial # is. There is a number stamped underneath in from of the trigger 494 is that anything. And then on the back end of the gun there is the # 57, is that anything?

Answer 1

You need to check the international listings for Japanese firearms to get more info on this.