Here is an Antique 1926 Grimes BRASS FIRE SPRINKLER HEAD. In my opinion it was never used. Old Stock. Well marked: On Top it is marked: Grimes Sprinkler Company Newark NJ then there is a FM inside a Diamond shape. Then in the front center it is marked: FC 165•C1926 Grimes. In the back it is marked: 165C26. See photos and feel free to ask any questions before placing bid.
Very Rare to find, especially in this condition.
Please view my other auctions for 2 more antique fire sprinkler heads in the same condition.