They look very similar to the Deluxe belts in my 72 Elky. Only my latch side is a bit smaller so the receptical end doesn't completely encase the extra eyelet. Those look to be of a later vintage 73+ maybe. Deluxe belts were usually the brushed stainless finish
I just sold a 72 ss a few months back and it was equipped with those belts. According to the build sheet, the car came with the deluxe seat belts with the shoulder harnesses. I can't guarantee they had not been changed, but the car had 77k on it and I don't think it had been tampered with. Hope this helps a little. Todd
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