Route number signage that appeared on the front of BMT D-type (Triplex) cars from 1927 to 1964 on the New York Subway. From c1965 photostat. This number was used on trains of the Sea Beach Line (4).
The original uploader was <a href="https://en.wikipedia.org/wiki/User:Cecropia" class="extiw" title="wikipedia:User:Cecropia">Cecropia</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>.
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