My current price guide says they're both worth $500 in very good condition working. That just gets you in the ball park.

Old Chicago is worth $700 according to the book.

What is the current price guide publication?

Just so you know, I would put Amigo at about $400 (sold one a few years ago for that at auction, fully shopped and playing great 9+ all around), however, at a more recent auction, another fairly nice one which played fairly well, fetched $800 or $900 prior to fees. And there were plenty of other pins there too none of which went for such an elevated price.

Crescendo may actually hit the same wide range depending on your local market. We are starting to see even the older multiplayer Gottliebs command decent auction prices even though they are not a Wedge Head. $500 seems fair but you might be able to ask more if the backglass is closer to a 9 or 10 than if it is a 7 or 8 like many of them.

I mention auction prices since the sales include additional fees (tax and bidder's premium) pushing the end price up as much as 23%. And they usually show to a wider market than local For Sale listings.

2015 Mr. Pinball Classifieds

As I say it's just ball park.