Dan
You have an early Miroku gun before the split when management at the plant forced many of the workers to fracture to other companies(or so the sorry was told). The name change (My-Luck to Miroku) was post this split. The gun you have is very well made. They have 2 versions of O/Us and 4 versions of side by sides with the full coverage 7 pin sidelock being their best. 20 gauges are very rare (and 28s even rarer) as 12s make 98% of what was made.
Enjoy the tour in Japan. Lost of ducks, pheasants and thousands of crows shot at the dump.
The man who was our primary source for guns and hunting info passed some time ago. Recommend hitting Yama's place in Misawa (most likely where you found this gun AKA Johoji's old place), the shop in Towada and gun shop in Heriosaki. All had nice guns and are a relatively close drive. There are a lot more gun shops in Shemokita area but you'll need to learn to speak Japanese and travel more. (that's half the fun)
If you really are well liked, you'll get invited to shoot Yamidori near Towada lake or taken to Hokaido to hunt Sika deer. Start making friends at the skeet range on the way to Towada just outside the town.
Again, enjoy the ducks. Thousands of canvasbacks fly thru there every year.
