Hello John,
Welcome! Those tuners were not used on any model that was made by Guild. The tuners were made by Gotoh and they were used on a variety of brands during the '70s. In those days ( and actually up to today) most Gotoh tuners were available with a variety of knobs. The standard knobs were more or less modeled after the Grover, Kluson and Schaller knobs that had been on the market for quite some time, but it was also possible for manufacturers to order machine heads with knobs of their own design. I'm not 100% sure if those 'special order' knobs also meant that they were an 'exclusive' for that particular brand, but that is very well possible. The knobs on the tuners that you have I've only seen on 'Aria Pro II Professional' acoustics from the second half of the '70s.
Here's a photo that shows these tuners on an Aria Pro II copy of a Martin guitar:
The version in 'gold' would have been used on the 'higher end' models of the 'Professional' line.
Sincerely,
Hans Moust
www.guitarsgalore.nl