It does look like some fine equipment, though. Unless you plan on working on your roof or out of an aerial device, you should consider selling that equipment and using the proceeds to buy some better climbing equipment.
As you can see from this search, the fall harnesses on the market are going pretty cheap, and yours seem to be of the older, less popular style.
Not much value there.
https://www.ebay.com/b/Industrial-Safety-Harnesses/53153/bn_16563199
This one looks similar to yours, and only went for $32, including shipping and the breakaway fall lanyard.
https://www.ebay.com/itm/3752701462...PPZNAX&hash=item575fd800e5:g:9ncAAOSwDAllw~va
That being said, here's a recreational climbing belt that looks like a massive improvement over tying a triple bowline and hanging from a rope:
https://www.ebay.com/itm/1762385570...AAW9S8&hash=item2908a2f7a8:g:AeIAAOSwS2dly~jX
View attachment 1157618
At $15, how could you go wrong?