Need to I.D. size and grade on Rockford#893508 and Trenton#3406220.Tried to look them up in the C.P.G.but was unable to find them.I would be grateful for any help. Thanks, Charlie.

Rockford 893508 is listed in Ehrhardt as a 0 Size 15J Open Face watch.
Trenton Serial numbers seem to be quite elusive in the 1903-08 period. If yours is a 16 size, it is likely a Model 3 of some sort of Jewelling.

Thank you David! I saw these on Craigslist with very poor descriptions and even worse photos. This clears things up. He also has a 15j 16s Illinois with a Gothic dial that I want a better look at. Thanks again.