10X1.75 Rear SHOES

Off hand, anyone know the "years" that rear axles came with the 10X1.75 brakes shoes or any information on them. My 69 fronts are the orginal 10X2.25, "not" 9" because it came with a V8. However, the rear 8.75 came from a donar vehicle unknown with the SBP. There seems to be a lot of info on the old small 9" and 10X2.5 and larger sizes along with their years, but I would really like to know more about the 10X1.75 for buying ect.

PS I know their not the best...10X2.5 front and 10X1.75, but they have stopped me in the past two years. I just didn't know the rear was thinner then the front. :scratch:
Thanks.