An older one like a 1960 should get more than a later model for sure since this is a pre-Gilson manufactured unit. Lawn Boy snow blowers and snow throwers not long after that were manufactured by Gilson, who had a huge capacity and rebranded to many names like New Holland, Ford, Plymouth, Artisan, Montgomery Ward, Master Craft (or Canadian Tire depending on the year), Senator, Mor-Power, Wizard, and a few others. Lawn Boy bought Gilson in 1988, then Toro bought Gilson in '89 and discontinued the entire lineup.
Since it is pre-Gilson and unlike a huge percentage of vintage snow blowers out there, it's a collector's piece for sure. I have a first generation Gilson from 1967(second year of production) that is all original that I paid $60 for, but I'm sure if I were to sell it as is I could list it for $100. Lawn Boy has a much bigger following so somebody may be willing to pay much more.
Kind of a long response with no real answer...
I did a quick search and found a few Snow Boys that had sold in the neighborhood of $100