Here is what I have found for the day but can someone tell me what the round thing is with the letter B on it. The thing is really heavy...? Thanks all
1970 COMPASS-
WHITES SILVER EAGLE-
WHITES DFX, 4X6DD COIL, 6X8DD COIL, 950 COIL, 10X12SEF COIL-
GARRETT PRO POINTER AT, GARRETT AT PRO , MINELAB EXPLORER SE with 8.5x12.5 Cors coil
This is a long shot, but maybe it's wood's metal. Wood's metal is a low-temperature melting alloy that's sometimes referred to as bendalloy hence the "B" marking. It looks like it was roughly cast with no particular importance given to dimensions too. If it's non-magnetic and can be scratched with a fingernail then that's one possibility.