no 61s back then.
I woudln't even look. for $250 I would buy it then worry about if it has a 60 or not.
Hell, if you don't buy it, I will come buy it and then smack you with a dead fish.
I'll give you that, old closed knuckle stuff. I had a 44 front in my 71 W200 that had the large knuckle outers. The "ball" on the ends of the axle were easily the size of a softball.Very early trucks came with dually dana 44, (like late 60's), so in that year it would be a 60 front with external flanges. The 61 front only came in diesel trucks during the early 90's that were equiped with the 727 trans. They were designed to run very high gear ratios to gain some mileage out of a non overdrive trans.
This must be ask the same question about Dodge axles week!