Can you identify this emulsion?

[Piotr Wołoszyk]

On the very bottom of my drawer I have found a roll of film. No sticker on cassette, no signs or trademark. The only marking is a code, pin-cut on a leader. It says C 50 1289. 

I know '40 and '50 Eastman Kodak nitro-base films had code starting with 12, but I can't find any info on 1289. Can anyone help? 

[Giray Izcan]

How cool!! Let's shoot them haha.

[Piotr Wołoszyk]

Code looks like that :