Correct, that isn't a 'dog tag' though some do come with addresses (of the contact person 'in the event.....')
You might send a letter mentioning your find to that address (marked "occupant") and see what happens.
Don........



Up untill the early 80's, I worked for a company that hand wrote their sales orders. The customers with accounts had an address lable similar to yours that we would stamp to go through the multiple carbon copies of the sales ticket
Then they went to computers and these ended up getting thrown out after a while.
The stamper looked somthing like this:
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