Can anyone identify this heatsink?

[Eric]

I've come across a surplus heatsink that does not include the thermal resistance figure. Its the HD9950 found at http://www.aaaim.com/cgi-local/shop991/shop.pl/SID=57502110803/page=THUN.htm#HD9950 .

I've been through the catalog from Wakefield and Aavid and can't seem to find a match. Can anyone identify the manufacturer or thermal resistance of this device?

Thanks in advance!
Eric

 

[Eric]

Thanks, Everyone!

I'd just like to thank everyone who took a look and tried to help! Since I was unable to identify this heatsink, I've purchased another one that I found surplus.