Mike,
I'll take the first WAG
These are things that may not enter your decision, but I thought I would point them out.
Action is blued, would have been case hardened,
It has an after market vent rib, I believe a Simmons,
Buttstock is not original in my opinion
BTFE is definitely a replacement
Value, it may be a $600-800 gun but I would call that generous.
Stan