Similar in concept to a number of other puzzles.

• Inventor: David Ayers
• Mechanism: Tricky Disky (derivate)
• Patents: US4708345, US4881738
• Producer: Unknown
• Year: 1994
• Original Price: $0.00 USD
• Current Price: $70.29 USD

The year given here is an upper bound. This puzzle was shown in "The book of ingenious an diabolical puzzles" from 1994.

Price Tracking Data

DISCLAIMER: The following table contains user-generated content. This information is collected to serve as a rough guideline and is certainly not complete and may not even be accurate. This information is filtered and carefully moderated, but incorrect information will inevitably find its way into the system. Always use your own judgement when buying or selling an item.

	Sale Date	Price (USD)	Sale Type	Condition	Package Condition	Notes	Contributors	Edit
	Mar 25 2009	$70.29	eBay Auction	Average	Missing	None	Roxanne Wong
= The sum of all currently check-marked rows.
= The average of all currently check-marked rows.

Thank you to the following people for their assistance in helping collect the information on this page: Geert Hellings. If you have any information or images that you would like to contribute to this entry, please click the apropriate add () or edit () icon above, or use the following links to modify this item, add a recent sale price or to add a new link.