I have two 5/16-14 314's. Im not sure of the generations.
1- small 314 logo near the black collar (ding in the collar) 3.9 oz's. 12.7mm below ferrule and 12.7mm 6" from ferrule.
1- slightly larger print 314 with the panther below it (warped) 3.5 oz's. 12mm below ferrule and 12.8mm 6" from ferrule.