A friend has offered them for sale.

I know squat about semis.

Great, good, ok,bad models?

Price (knowing him they will be VG to excellent condition)?

Auctions were already checked only one 39-2 available no 459s.

How are they compared to the modernized S&W M&P?
These choices are for carrying (some), shooting for competence and if need be for social interaction.

I gots wheel guns for real shootin!

pay any more that that for either. The 459 is a reliable enough but not as rugged as the M&P. At least one guy here has a 59 for a truck gun. I would venture a guess that 650700 for both is top money

--
Of the Troops & For the Troops

I have a 59 that lives in the truck along with three loaded magazines. It is reliable and reasonable accurate. I bought it because it was cheap and came with a bunch if high capacity factory magazines.

That said, I don't believe I would choose a Smith and Wesson 9mm of that vintage as my primary carry gun. There are far more viable and modern designs available.

....I use an XD 45 instead of a 4506 for carry purposes

Guess I am back to my original quest and will look for a M&P Compact