Sterling 16/16 Slant horn Model M - Hume Highway Department (42.46962 N, 78.13049 W). Pre-1928, Slanted horns instead of curved marking it as one of the interphase M's between the long M and 1926-1928 M iirc. 16/16, unknown if it's active, connected to power. likely an early to mid-1920s unit. Submitted by Warning Sirens of CNY.