ID a Part Please & WIW

[Ironhorse]

Have had this for some time, acquired it along with a bunch of truck parts awhile back. Was told it was for a Blazer spare tire mount at the time but it's not familiar to me at all. I had a 71 Blazer K5 years ago (like a dumba** I sold it, LOL) with the outside swing away spare tire mount. The double angle bent section is a solid one piece tube with the center triangular piece welded to the tube. The channeled arm bolts to that section near the triangular center section. Is the channel piece bent or twisted or is it correct for mounting in that manner? All three tube ends have a flattened bolt hole mount. Is this for the newer square body Blazers? Never had one of those so am clueless. Any help with an identification, years of application and a value would be much appreciated.