Peter:

"Eagle Nitro" is a common mark on Sauers proofed/proved after 4/1912. It's usually on the side of the tube just up from the flat. Interesting that the flats doesn't show that the tubes have choke. Could you give us a pic of the bottom of the frame?

Kind Regards,

Raimey
rse

Last edited by ellenbr; 07/20/08 10:23 AM.