Steve, the elevator block is original military,they came from the armory/ arsenal serrated. Notice the band is also serrated.The sight blade is aftermarket, you said its marked and I would guess " Sheard from Tacoma WA?. Here's a pic of military sight block with an aftermarket Lyman sight blade. (Bead has been broken off).
I have no clue as to what the numbers are on the barrel bottom.???
The barrel date does seem a bit later than receiver date, however I read someware ( Hatchers book??) that Barrel date an receiver # didn't always correspond. Meaning that some receivers had later dated barrels put to them. Possibly the case with these special star gauge barrels, in some cases?
