Yep.  One week later, the next estate sale.  Another button collection......
I pawed around in a little basket of little ribbon bows, so ancient and decrepit, destined for the garbage bin.  Underneath, there was this nice-looking button collection rattling around.  They'd only sell it as a "set", so I bought the whole thing.  You understand, I'm sure.
Well, in amongst the buttons was this packet, mailed in 1957 for 3 cents, to Miss Mae Awe.
And inside the packet, Mae's thank you gift for filling out a customer survey.  Uh-huh!
I do so love estate sales!