Signature Heater Core?

[Rice Nuker]

Hi All, well I am disassembling my heater / ac box completely for an overhaul and freshen up. Pressurewashing most the parts repairing or replacing some items. Here is my heater core, what the heck, this thing may be American made and recently installed. This is my first A body heater core, so, cant really tell if its an American part, dealer replacement, aftermarket.. Appears to be signed by someone on a copper thin sheetmetal tab which is attached on the lower frame facing towards the engine compartment..
Any thoughts?
Just killing time rebuilding small small items since I dont have my shop built yet.