It's Siren Number 144, a type 1 rotating siren, specifically, the Federal Model 500T, a 10 HP dual-tone siren introduced in 1954 for Civil Defense purposes produced by Federal Sign and Signal Corporation.
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It's Siren Number 144, a type 1 rotating siren, specifically, the Federal Model 500T, a 10 HP dual-tone siren introduced in 1954 for Civil Defense purposes produced by Federal Sign and Signal Corporation.
Read More