You'd Be Surprised

625 pieces, push-fit all the way (even around the edges!). According to the eBay seller, this puzzle was in an attic in Brentwood N.H., cut by someone with the initials W.D.G. in the early 1930s. It didn't look all push-fit in the box, but such is life. It was a worthy challenge; I'm not sure whether the background was always all one color or whether fading colors changed it, but it's definitely enough push-fit for me for a while. Still, its technical perfection for what it is makes me award it a 5/5.

starting out

frame

main figure

progress, rotated for some reason

finished!