Raimey,
that looks indeed different from the 'JY' version, although at first sight it could be mistaken for it.

Am I right in thinking that these marks are likely the
'tube forgers' marks? (and the Kelbers for instance would finish the barrels?)
they seem to be mainly in line with the (i.e.) 'Krupp Laufstahl'
script near the bullet.

I put the 2 pics of 'JG'(?) and JY together for comparison

Best regards
Günter
NRA Life 1974


Last edited by Gunter; 03/13/13 04:15 PM.