[oletrucks] What is this?????

[Kevin & Deana Brown <MGTRAutoXr@sprintmail.com>]

Does anybody have any idea what this is?  
http://i8.ebayimg.com/03/i/00/b5/ee/80_0.JPG

It is on the passenger side of the hood of a heavy duty, maybe 2 ton 
chevy that is on eBay.  I have never seen anything like it and the 
auction doesn't say.

Kevin  '49 Chevy wrecker  '51 Chevy 3100
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959