Help with barrel flat markings please

[Kevin McCormack]

HT/A = High tensile alloy steel
Small sunburst symbol likely an inspector's mark
E. and G. probably Remington codes (?)

[Bill Murphy]

October 1936, Tom. This is a manufacturing date. With suffixes, it would be a repair or parts replacement code. It's a nice gun to sell. Let me know. You are the man. Sorry, I misread the chart. The year is 1938.