Wow, I had the urge to see if I could find any info on my first guitar, and lo and behold, I found a picture of _exactly_ what it was.
A 1966 Harmony H-79 12-String, bought out of a gas station window in Havelock, Ontario, Canada, in 1974 for $75.00. I was 11 going on 12. My uncle gave it to me...