More than likely a BFO or early TR. Almost sounds like it's a detector made for kids. The picture wasn't there anymore so I didn't gert to see what it looks like.
My son-in-law has an old White's TR. No Disc but doggone the thing worked good. It's the first detector I ever used just before I bought my 4900D.
1st Sgt., USArmy, Retired
Proud Dad of an Army Ranger