Had this since the early 70's. An old timer gave it to me when I was a kid. Had some folks say it would probably date back to the 30's? I had it packed away for years, but use it sparingly now. It still works well.

Nice pressure gauge. I would have hung on to it too.

I don't know anything about the gauge, but I recognize the L.I. CITY on snap closure. I've got an old wrench that was made in Long Island City, New York too. 

You need a Moto Meter radiator cap to go with that pressure gauge. Then you would be set to take the old buggy out for a ride.

Mike and Frank are always buying Moto Meter radiator gauges.
Happy picking!

I'm gonna say at least the 1920s.

I second on the 1920s,  because of the Baloon tire script, don't believe that was used much after 1930.  That gauge is a keeper.

Thanks for the comments and info.   

The man I got it from battled a familiar demon and if not for his brothers support, would have had a tough time holding a job. As a young kid, it was easy to feel superior to the old man. Circumstances led to me having to work side by side with him for a few years. I learned quite a bit in those years...humility being at the top of the list. Probably had something to do with me hanging on to it all these years.