Vintage USA made wood jigsaw puzzle 800+ p. "Leaving Winter Behind" by A Holland

Description

Large vintage (could be a J.K Straus but since I don't have the original box I am not sure)  jigsaw puzzle made of 3 layers of interlocking wood (or similar) pieces. The painting is signed by August Holland an American painter. In the bottom left of the puzzle it says "GP 16702" and underneath "Litho in USA Co".
Box has hand written  "around 1000 pieces", but probably around 800 to 900. It is used but in very good condition. We have put it together to verify that all pieces are there, and they are, photos were taken May 6 2021. It took us around 40 days, putting around 5 hours a week to do it. Box is the one we got it in years ago, not sure what happened with the original, and not sure what year exactly this one is from.  For sure it is at least 50 something years old.
Please see the photos and let me know if you have any questions. Shipping is free only within the USA, thanks for shopping!!!