That would be a "TypeII Blank" I believe. Even the Red Book says Copper= $3 and Zinc=$2. I would say it is worth more that 1¢
Blanks are cool. I have a copper one. That one looks like zinc. (Weigh it) I don't know why there is a higher premium for one without a rim. You can tell more easily that it's a real blank when there is a rim. Nice score.
If anyone is interested, here is a link to some info on Blanks and Planchets.https://www.fleur-de-coin.com/articles/blanks-planchets
I would be scrounging through that bucket right now. Besides my legit blank, I found something. At first I thought it was a cent blank, but then I realized it was too small. It is the exact size and weight of a dime, so I thought it might be the copper core of a dime. But then I realized it would have to weigh less than a dime. It's just a blank copper disc the exact size and weight of a dime. So I kept it. But I don't know if it is anything or not.
This is why I open rolls of solid new pennies. I found one once but it fell in a crack in the ground.
Took some searching but I found it. Unfortunately, this one was definitely sanded. The reverse is a normal strike with a rim, but the obverse is flat with no rim. It weighs 2.64g. If you look at it closely you can see the file marks. Oh well, maybe next time.