http://www.ebay.com/itm/Rare-Unusual-Antique-Vintage-Double-Ended-Adjustable-Alligator-Wrench-/230706615126?pt=LH_DefaultDomain_0&hash=item35b72f9356
Interesting wrench. Perhaps not so practical.
Up to $15.50
Still plenty of time Papaw.
Cope says there are 2 patents for Cronk, first is 1904 and the second is 1912 for a simpler design. One sold early this month for $73.00 I think that one was the early patent and I think this is the 1912 patent version.
They are both in datamp also, this is definitely the later design...
http://www.datamp.org/patents/search/xrefCompany.php?id=2064
3 days left
Up to $22.56
Sold for $78.99