[QUOTE=Macybaby;6212082]1923 Singer 66-5* Red Eye side clamp
So far, the 1923 manual is the earliest I've seen showing a Red Eye with the side clamp foot - if you've seen an earlier one, I'd love that info.
According to the "Comprehensive Singer Model list Classes 1-99 at ismacs.net the 66-3 was a hand crank, with rear mounting presser feet. 66-4 ( 1923-??) was a treadle and had side clamping feet. The 66-5is a hand crank.
So, if any earlier 66's have side clamping feet, they were changed at some time. I hope this helps.
What pretty machines you have!! Thanks for showing them and the attachments and the explanation of the attachments..
Janis