first one without checkering is a Mod EG made roughly 1937,model started 1935 ,checkered in 1940 ,
second one is a Mod F made approx 1925,quite often came as a set in a case,yours having been drilled and tapped aftermarket and with the stock repairs has little or no collector value but with the 410 barrel is very diserable and that barrel is worth a fare bit of money.
norm
