I believe those wheels are Aloca part numbers:

761000 not polished
761001 polished outside
761002 polished inside
761003 polished inside and outside

Attached is a picture of some.

Old catalog with them listed. https://www.southwestwheel.com/pictures5/LTFitment-Screen_10-18-01.pdf

Alcoa may have also made these wheels with 6 hand holes (instead of 10 as above) if so these were the part numbers.
763100
763101
763102
763103
Attachments
IMG_2566.JPG (2.94 MB, 20 downloads)

Last edited by Grigg; 01/04/2018 8:48 PM.
•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-