Just found this, you can buy a share of the original Listerine Mouthwash royalties from 1881: https://auctions.royaltyexchange.com/orderbook/asset-detail/4580 h

Just found this, you can buy a share of the original Listerine Mouthwash royalties from 1881: https://auctions.royaltyexchange.com/orderbook/asset-detail/4580 https://auctions.royaltyexchange.com/orderbook/asset-detail/... They’re asking $2.1M and they earned $140k last year.