Ring pull and 20 pence both are identical on ID on my Manticore, is there a detector out there that can distinguish between the two, can a detector accept one and reject the other?

Crown Cap and Iron corded 2 pence

Can a detector tell the difference between the two, can a detector accept one and reject the other?

Low conductive and high conductive coins , 3'' deep and 1" apart , chosen because they will give different tones on most modern detectors, can the detector pick them both up as to separate signals although they are only 1" apart

Low conductive and high conductive coins , 8'' deep and 1" apart , chosen because they will give different tones on most modern detectors, can the detector pick them both up as to separate signals although they are only 1" apart but at a greater depth

Halfpenny /20 Pence/Iron staple can a detector give 3 different tones picking out three different metals when they are all so close and touching each other

Piece of Coke , to see if a detector can easily recognise it so we don't have to dig it up!