Nice to see you here, Bill Paul.
Bill is a noted collector of older 2-rail.
I am going to suggest without proof that if you want to buy/sell 2-rail this area of the forum is in fact noticed by 2-railers. The "Buy-Sell" forum is geared for 3-rail, and I never go there - I suspect other 2- railers are the same. A dedicated 2-rail buy/sell/wanted might get our attention.