I took a very quick look at a IJ 12 gauge today and plan to take a better look tomorrow and take some pictures.
What caught my eye was the 30 Single barrel had a raised solid matted rib, with a narrow schnabel type forend. The reciever was case colored with an external hammer. I was told it is a IJ SBT gun. Its clearly a vintage gun in pretty good condition.
I have looked on line but have not found a similar gun.
Any ideas on what this might be?