In perfect condition purchased brand new directly from William Strijbos.
Schlüssel Review (part way down):
https://mechanical-puzzles.blogspot.com/2010/03/new-york-puzzle-party-part-4.html
Thanks for looking!
Payment: PayPal (F&F preferred or buyer pays fees).
Shipping:
USA Priority Mail $12 with tracking.
International shipping calculated at end of auction.
Please don't pay until shipping has been added to Invoice.
I will be happy to combine shipping for multiple puzzles.