SR-71 fragment up for auction

No knowledge other than what's on the webpage, but you certainly don't see SR-71 bits and pieces made available to the public every day.

http://preview.rrauction.com/bidtracker_detail.cfm?IN=450

If you're a space geek, there are lots of other interesting things up for auction as well.

 

No. According to http://www.sr-71.org/blackbird/losses.php, here's the description for that one:

SR-71A (61-7952 / 2003)
This aircraft disintegrated on 25 January 1966 during a high-speed, high-altitude test flight when it developed a severe case of engine unstart. Lockheed test pilot Bill Weaver survived although his ejection seat never left the plane! Reconnaissance System Officer (RSO) Jim Zwayer died in a high-G bailout. The incident occurred near Tucumcari, New Mexico.

Interesting account of the crash from Bill Weaver here:

http://www.alexisparkinn.com/sr-71_break-up.htm

Here's the description for 61-7970 from sr-71.org:

SR-71A (61-7970 / 2021)
This aircraft was lost on 17 June 1970 following a post-tanking collision with the KC-135Q (59-1474) tanker. Lt. Col. Buddy L. Brown and his RSO Maj. Mortimer J. Jarvis ejected safely although the pilot broke both legs. The SR-71 crashed 20 miles east of El Paso, Texas, but the KC-135 limped back to Beale AFB, California with a damaged refueling boom and aft fuselage.