odd ball 16" rims- any clue as to what they are

came from a guy that dealed in early chrysler stuff. so im guessing they are from the mopar family. 16" by 5-1/2" sixlug with clips for a center hub cap. solid no windows. they have peg holes for line up som im guessing the vehical they fit used a lug bolt instead of a stud.
any guess to what they fit ?

 

might be an equipment wheel..like compressor, trailer, concrete rig (not truck)..interesting

 

Just a shot in the dark here but how about International pickup truck? All of my early Chrysler and Imperial stuff is 5 hole.

 

Never saw 6 lugs on anything but Chevy and GMC. All the old Haybaler pickups I ever saw were 5 lug, as were all the Chrysler products I ever saw.

 

Trailer house wheels.

 

From what I understand, 1 ton IHC trucks had 6 bolt patterns, but I believe they are on 4 1/2.

 

37-40 Cad. Big series stuff. 6 on 6" Bolt pattern.

 

As for the lug bolts instead of more commong stud with lug nut, my 51 Willys Aero Lark had them, but 5 hole not 6, also I think some International did also, might be Int truck.