Were they EQMs?
Many of us received 10,000 Thank You EQMs back in July. These were EQMs only and were probably delivered in a attempt to help frequent flyers maintain status as well as keep you from leaving for other programs if you didn't have the flying scheduled this year that you have had the last several years.
I assume these were EQMs. A search will give you several threads that go into the July program.
Is this what you received?
TBF