The Jig Saw was the first woodrail that I got when I started to collect them. Yes, despite the fact that many may have been made originally, today it's hard to find 58 year old survivors of this game, or any other woodrail. The ones that I do see for sale or usually projects or beautifully restored (high dollar) examples. Therefore, either $600-$5000 dollar machines...
My game is essentially as found with no additional attempt at cabinet, glass or playfield touchups.. just some basic shopping and new plastics, etc. Accordingly, it was fairly priced in the middle of the above range. Compared to other "restored" games of this vintage, it does look rougher, especially the playfield areas around the lanes and center gobble hole/kick outs where there is much activity.
The original glass is mirrored and every example that I have seen, including mine, has blotchy areas. The repros look faithful when lit up, but when they are unlit, the backglass has just a "mirror" showing.

I enjoy playing the game and the previously posted video does show some of the activity and sounds. The gobble hole is well protected, so the balls do survive some play time. It's a keeper for me, but I do want to comment that I agree with JR that the TNT example is not that bad and appears to be a worthwhile restoration candidate.

As regards to 1957 machines - in general, I like the games of the mid 50's and hard to pick a specific year as a favorite. I have two other 1957 machines - Gottlieb World Champ and the Genco Show Boat. All 3 play completely different from one another - and all recommended for a good 1957 machine.

Also, somewhat surprisingly, is that the 1958 Williams Gusher, just one year newer, looks like it came from a different company. Different art, play, mechanicals, etc.

Good luck in your search

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Good job! Best of luck with it. It's one of my favorites!