the 78203 seems to be a serial number and the 18tcns, "I was told" is a proof mark of sorts..still looking for the BNP, I think once you find that out we shall know the rest..
sorry I couldn't help anymore than that.
Numrich Archiver
Joined: February 2010
Posted: August 23, 2001 09:32 PM
so far I have found
2-494" is the overall cartridge length
the 78203 seems to be a serial number and the 18tcns, "I was told" is a proof mark of sorts..still looking for the BNP, I think once you find that out we shall know the rest..