$400-600 tops as it sits. Buy a replacement forearm off of ebay for $60 and increase the value of the gun by more than the $60. The coin in the buttstock is another detractor but if its been in the family for that long hopefully it stays in the family. Most of the barrels on these guns are worn to the point of not shooting well. If yours is still shooting a good group, that is a plus. I had mine relined and now it shoots great. The letter adds some value but maybe not what you spent on it because its a common shipping destination and these guns commonly came in 2 configurations, octogon barrel and round barrel.