Vintage Brass Radiator Fill Spout

[Roberts210]

I've had this radiator fill spout for years. It's solid brass. Can anyone identify the maker? The cast logo is an S inside a 6-sided border.

 

[The Cobbler]

that is cool. I have one similar, will have to dig it up & look at it.
sorry, no help on your question.

 

[Roberts210]

Ok, thanks.