a variety of gold alloys are imo best used in ways that narratively suggest and lead to extinct cultures and technology, ideally with strange markings and found with cultural artifacts that send the party to a sage who can direct the party as to their significance in a manner that furthers the campaign. (Alternatively a high-level bard might just make a lore roll, or be told by the DM to smooth gameplay.) Electrum has been a part of standard D&D rules since at least 1st ed. one coin generally worth 1/2 a gp.
https://en.m.wikipedia.org/wiki/Electrum
Naturally occuring gold/silver alloy. Used for the earliest known coins, the caps of Egyptian pyramids, etc.
Or, in the current context:
https://www.dndbeyond.com/sources/basic-rules/equipment#StandardExchangeRates
Coins worth 5 silver pieces, or half a gold piece.
Money is money.
“Oh shit, is this the Mistborn universe?”
What’s an electrum
They circle the protums and neutrums.
gold + silver alloy.
In my setting, I just use them like a $50 bill.
