Since I'm new to the hobby, I would be excited to dig either a Buffalo nickel, Indian head penny, Mercury dime, Half or Dollar coin, or a Diamond ring.
Any silver or gold coin wouldn't be so bad either.
Anything that I could use to impress my wife and make her believe I haven't lost all my marbles picking up a new hobby at this age. Well, come to think about it, even Scuba's gold wouldn't do that. Maybe some 1600/1700 coins would be nice.
Seated anything because I have yet to find one. I have a type 1 trime, 1881 morgan and a 1892 barber, but no seated. I think the half dimes are really cool too.
Digging homesteads, old brass fittings. then harmonica reeds and clock parts. that way I'm never disappointed. even at the worst homestead ,
( really, just any old pre clad coin makes my day.)