...This appears to be an early Robeson based on the tang stamps and thought a Robeson with a Federal shield was somewhat unique (?). Nice jigged bone with some worm groove jigging on a 2 & ¾” knife – looks like Rogers Bone to me as well but not sure. Interestingly the blades have 2 different tang stamps. The Master has “Robeson/ShurEdge (script)/U.S.A.” (1916-1939) on the mark side and a pattern # stamp of 62664 on pile side tang. The pen blade is stamped “Robeson (arched)/Co/Cutlery” (1900-1916)… Thus from these stamps one can deduce a time frame of date of manufacture +/- 1916 given the 2 stamps overlap in that time frame. As noted by pattern # the bolsters are iron though the liners are brass. Knife is uncleaned condition which is normal for me (except for oil in the pivot) - I do think this knife was well carried based on patina and the nickel silver shield still has a shine probably based on the fact it was well carried in a pants pocket which kept that shield polished
I wanted to share it here with on the Robeson subforum – I have 2 Robeson’s now and don’t chase them as I have stumbled on the few I found - and I think Charlie has me thinking about them subconsciously
(no doubt Robeson made some lovely knives) … Thanks for looking!!Here are the photos -
- I have seen that jigging on Robeson and of course Cattaraugus but also I've seen a number of H&B knives with worm groove jigged bone handles as well.. I know other cutleries used that jigging as well. 
I knew it was a Robeson but was not that familiar with dating the many stamps Robeson used over the years. After looking it up at home I realized it was an earlier Robeson, and this is just my guess but possibly a transition knife given the dating of the 2 different stamps 
