O.k. so I've been holding off contributing to this but decided to. The reason being that I really don't know what my first 2 were.
The first I bought from someone around 1976 and only paid like $10 used and it was a piece of crap that could only find things about 4" in diameter and 2" deep.
The second and first good one I bought from an old friend and school mate in about 1987. I paid him $50 used and remember him telling me if I was to ever buy a new one the good detectors started around $250 (in 87). I know I used to try figguring out what brand it was but didn't see anything on it that I recognized as I was only familiar with four American names at the time, Whites, Fisher, Garretts, and Bounty hunter. The only thing I vaguely remember is it " seemed"liked said made in Germany. Also remember it had a tunner, ground balance and on/off and sensitivity, oh and yes it ran on 2 batteries that were 1" square by 3" long.
Went by and visited him year before last and he said he thought that machine was a Whites. Dunno, but it was a good one until the coil got broken by my young daughter. In 1997 I bought my first new one, a Whites classic SL ll.