Raimey,

Thanks for your response. The 2283 is also on the bottom of the right tube just forward of the flats. On the lower rib, between the flats and the forend hanger, there are the numbers 1293, followed by a lower case g. The "g" is bigger than the numbers. There is also a 46 stamped on the bottom of the left tube.

I will try and get an image of the Krupp stamp a post it later.

Thanks for your help. Milton