Sealed Beam (12v - with Red Backing) - Fits Various:

Oliver White

John Deere

Massey Ferguson

Allis Chalmers

rpls: 103593A, 20-7000652, 166406A, AR77324, 10P2646, 70250301, 

NOTE: 12 volt - Common 4 1/2" Sealed Beam used on various Tail Light Applications w/Switch to go from Flood Light to Red Light

NOTE: also see: https://stores.ricksagparts.com/sealed-beam-20-70000652-166406a-ar77324-pkg-of-2/