Drueke “Play A Way” stamped board

Yeah, it must have been already used when it was gifted in the 70s. The light squares don’t look like maple to my non-expert eyes so I assume they’re birch. I don’t think that really narrows down the manufacture date any more though. Hoping someone knows what years these were sold as Play-A-Way.
Drueke boards have held up well with time. Their is another thread wherein the OP said that these boards have remained quite goods for use.

Drueke boards have held up well with time. Their is another thread wherein the OP said that these boards have remained quite goods for use.
It’s a great board! Has to be a good sign that every current hardwood board maker sells a knockoff (many of which are also great).
But specifically I’m asking what years the boards were stamped with “Play A Way”. Later they had a sticker instead:
Seems like this information is mostly lost now although there are some Drueke collectors Facebook groups that I haven’t explored yet…
Hi, I had the good luck of buying this beautiful 21” Drueke board from a nice older woman who got it as a gift in the 1970s and played checkers on it. It has a stamped inscription on the back: “Drueke No 63/ Grand Rapids, Mich./ Play A Way/ Reg. U.S. Patent Office”. I gather these stamped boards are older than the stickered ones and the Play-A-Way brand was created during WWII. Beyond that i can’t seem to find a specific date range for this board. Can anyone help? Thank you!