Never seen nor heard of any other reference aside from 1675 and 1655 that uses 1575. My 1675 was purchased new, ironically, the same year as you (1967).
Oysterworld is incorrect (ask Mr. Dowling about the iterations of 1570 + 1575).
You must keep in mind that Rolex might've used some leftover 1575 movements for the references mentioned at Oysterword.de but 1575 is not the 99% of the time correct movement for the stated reference models. Oysterworld has compiled all references that have been 'spotted' using the said movements. This has been discussed many times on VRF, Turf and T; and the data remains inconclusive to this day (expections to the rule, so to speak).
The fact that your watch has 1575 is extremely unusual (but wholly possible). The fact that my 1675 (serial dated to IV '67) has a small GMT hand but is not a pointed guard 1675 is also just as unusual.
To add to the confusion, most 1575 movements are marked "1570", not "1575" (the same goes for 1560 & 1565 movements).
So, for general reference purposes, it's best to accept the general rule of thumb with Rolex. And, to add to this, we must also accept that Rolex broke these rules as they saw fit: Parts caches were used up as they were found. That is why you see some 5513 with 1530 movements instead of 1520, or a late 60s 1675 with early 60s small GMT hand, etc...
Cheers