old aluminum broiler rack

"EASY TO CLEAN BROIL RACK - NO.7 CAST ALUMINUM" made by "L. E. MASON CO. BOSTON MASS". The No.7 probably refers to its size, a little under 7" across. I don't know how old it is.

And that's about it...I don't know what more to add, it's pretty self explanatory...? It *does* look like it works (and has been used?!) so I guess I'll add it to my mess of 'kitchen gadgets I might or might not ever use', probably hanging somewhere out in the open because it looks kinda cool too...? ;-) :-)