🔎 UNIDENTIFIED Need Help On Backyard Find

[USNFLYR]

Found in a 1940 era backyard. Owners says a house existed next door from the 1910s. Too small to be a pet collar. Faint red on chain. Symbol in middle looks like a bell. Maybe a fire bell/hydrant/extinguisher chain?

 

[Fredneck]

Horse curb bit chain

 

[Terry Soloman]

Great ID Fredneck!