I think the double set of crossed palms to indicate a pressure near 16k psi. Also the "Crown" over "PT" is a 1924 mark while the sets of crossed palms are July 30, 1897-1923 marks. After 1923 the double proof would have been 2 "Crowns" over "PT" at 15.6k psi.

Kind Regards,

Raimey
rse

Last edited by ellenbr; 01/16/09 01:04 PM.