Need info about some coupling pins

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#1
I work for the water department herevin Tacoma Washington. A few months ago one of our crews was working on the water mains down on St. Paul Ave. Which is located in the industrial part of town. During the excavation they found these two coupling pins that appear to possably be from thev old link and pin days. The one with the bulbous handle has the initials "PF&I" stamped into it. Any thoughts as to what those stand for? Could they be the company that produced the pin? Photos are attachedk uploadfromtaptalk1411183521304.jpg uploadfromtaptalk1411183535212.jpg
 
#3
On a hunch I queried Pacific Foundry and Iron, but did not find anything. At one time Joseph Simon & Sons had a scrap yard somewhere in Tacoma that specialized in scrapping diesel engines.

I moved the thread again to what I think is the appropriate forum where hopefully it will garner some responses.
 



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