The PWD 5 is stamped on, most likely an owner's or service department stamping.

If old wrenches interest you, check out the new database on wrenches at....

https://www.45spaces.com/vintage-wrenches/

For this particular wrench... 

https://www.45spaces.com/vintage-wrenches/r.php?r=3z646

I will combine shipping. It is hard to set up a combined shipping program with the variety of sizes of wrenches I sell. Your best bet at this point is to buy all of them and be confident I will refund the extra shipping back to you. I want you to have more money for more wrenches, not be spending it all on shipping costs.