Re: H & R Revolver model 939
AE = 1968 manufacture of your 939.
I gave about $ 300 for mine, in like new condition, with original box.
I do see them in excellent condition going for about that sometimes.
Normally I would say a little less though, probably $ 250-275 average.
Good shooters, and considered a target shooter, but I find my Sportsman models shoot as well or better, and I think the Sportsman sights are better also.