Back in the days of ticket books at Disneyland, there were additional ticket booths all over the place where you could buy individual tickets if you ran out of a specific letter in your book. Some attractions even had their very own tickets with the name of the attraction printed right on the ticket itself.
This is a matched set of Adult and Child ticket booth tickets for the Mad Tea Party attraction. These were probably samples or similar because they have the same serial number, and it is a very low number. Also, there are staple holes in them which leads me to believe they were never used in the park, but probably stapled to some sort of document.