That’s what I love about Cartoon Brew, I learn something new everyday!
I actually have two sets of these and I’m looking to sell one. I understand they are the only sets in existence. String holders themselves are not unusual collectibles. There’s quite a large market for them. Hakes has several vintage character based string holders currently on auction. As we know, Bokso collectibles are extremely rare (Honey maybe even more so) so seeing Bosko and Honey depicted in 3D plaster relief was a stunner! They apparently date to the 30’s and were acquired from an elderly couple who collected string holders.
Check out other cartoon character string holders on this Hakes auction page.