Of this 3x3x3-variant only few examples were produced and sold in the eighties.

• Inventor : Josef Trajber
• Mechanism : 3x3x3
• Patents : SU1194436
• Producer : QJ
• Year : 1982
• Original Price : Unknown USD
• Average Price : $87.39 USD

This is one of the shape-variants of the original 3x3x3 which were produced but only for a very limited time with an equally limited number of samples. The original samples (which weigh 94 grams) are highly valuable collectors items.
The images of this entry show one of these few existing production samples. Compared with the original 3x3x3 the corners not longer need to be oriented but the faces now have a visible orientation.
David Singmasters Cubic Circular (issue #3) confirms that the puzzle was produced no later than 1982.

Around and after the year 2000 this modification was a popular hand-built modification. To make one requires a lot of work. The triangles are the original "corners" on the 3x3x3 cube. The 4-sectioned pieces are the "centers" on the 3x3x3. The 2-sectioned pieces are the "edges" on the 3x3x3. It is a simple mod, but every single piece needs modification.
Image 5 shows a truncated 3x3x3 from which the puzzle can be built by applying extensions.

About one additional decade later this variant went again into mass production. Therefore nobody has to built one or pay a fortune on ebay to get one.
The fourth image shows a version from the early eighties which calls this puzzle "Double Triangle Puzzle".

In 1984 Aleksandr Ordynets filed a patent which covers Halpern-Meier-Tetrahedron and Trajbers Octahedron. It is assumed that this is a case of parallel invention.

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
	2009-07-25	61.55	eBay Auction	Good	Unknown		Kuhrik
	2009-03-30	145.00	eBay Auction	Excellent	Missing		ejisfun
	2009-03-27	81.00	eBay Auction	Good	N/A		ejisfun
	2003-09-30	62.00	eBay Auction	Average	N/A	Built by Wynn Walker.	Sandy
USD = The sum of all currently check-marked rows.
USD = 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: Tyler Robbins, Geert Hellings.

This puzzle can be found in collections of these members:

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