Went to the local flea market today and had some good luck. A seller had a couple of LB7's in very good/great condition. I paid $15 each for them. One is a 3 rivet and one is a 4 rivet. The 3 rivet has the showing steel front pin but looks to be unused. The 4 rivet has been used and sharpened but the blade looks close to 100%.
The 4 rivet has a higher grind line then the 3 rivet, 1/4" from top compared to 3/8". The 4 rivet has a solid spacer on the back bolster compared to the 3 rivet which has a 2 piece spacer. The 4 pin has a serial number and the 3 pin does not.
The tang stamp on the 4 pin is:"SCHRADE + U.S.A. LB 7" and the 3 pin is: "uncle henry (in script) SCHRADE + LB7 U.S.A."
The width seems to be the same on both. The 4 pin was .618-.621 and the 3 pin was .610-.615. The blade spine measured .124 on the 4 pin and .117 on the 3 pin.
The nail nick is higher on the 4 pin than the 3 pin.
The 4 rivet has a higher grind line then the 3 rivet, 1/4" from top compared to 3/8". The 4 rivet has a solid spacer on the back bolster compared to the 3 rivet which has a 2 piece spacer. The 4 pin has a serial number and the 3 pin does not.
The tang stamp on the 4 pin is:"SCHRADE + U.S.A. LB 7" and the 3 pin is: "uncle henry (in script) SCHRADE + LB7 U.S.A."
The width seems to be the same on both. The 4 pin was .618-.621 and the 3 pin was .610-.615. The blade spine measured .124 on the 4 pin and .117 on the 3 pin.
The nail nick is higher on the 4 pin than the 3 pin.