First, expiring June 15, 1957, these are "Special Bonus Tickets" This have no perforation on either side so they did not come from a booklet. I am not sure how these were given out, I'm guessing they came with the "tour" package or some other promotional deal.
Update: From Progressland: According to my sources, the Big 10+2 Winter Bonus Ticket Plan started January 19, 1957 and ran through May 12, 1957. (It must not have worked out as well as they had hoped as they extended it from a March ending.) You Get ADMISSION, 10 fabulous RIDES plus 2 bonus rides of your choice! You SAVE up to 34% over single priced admissions PLUS up to $1.00 in Extra Bonus Rides.
The back is pretty darn simple. Basic "Courier 10" font and a little sloppy. That's not dirt or grease, that original ink smeared on the back. You don't see blemished Disneyland ticket like that very often.
From Major at Gorilla's Don't Blog (I'm going to owe him some residuals soon!) a neat set of Bonus Tickets that expire May 31, 1958. Check out the stereotypical picture of a 1950's family on each ticket. This does appear to have a perforation on the left side so maybe it came from a special ticket book. Even though these Bonus Tickets are not indicated as "special" they sure look special to me. Thanks Major!
Update: From Progressland: Bonus Time at Disneyland ran from January 18, 1958 through April 6, 1958. 2 Free rides of your choice with every ticket book! Here's the hook: "If you buy 4 Big 10 or Jumbo 15 ticket books for your family, you'll get 8 additional bonus rides at no extra cost. That's an actual $4.00 bonus value! Yes, you get two big bonus rides of your choice with every Big 10 or Jumbo 15 ticket book! And it's available now!"
As my regular readers know, I can't have a post without some color. From Spring 1957 here is the cover of "Disneyland Holiday" Gotta love that 12 cents a foot wire fence protecting the grass (and dirt). Check back Sunday, this entire magazine might surface.
Thanks for the great information Progressland!
Happy Leap Year Day!