This is a watershed moment for sports memorabilia.

The Royals, in an update on the old sell-the-infield-dirt routine, are taking water from the Kauffman Stadium outfield fountain and pushing it for $19.99 a bottle.

The liquid souvenir, which comes in a cute Royal blue bottle, is authenticated with a special MLB hologram.

Tickets for the Royals’ home game Monday night against the Tampa Bay Rays were available on StubHub for $6.99.