Year Introduced: 1952 Total Pieces: 24 #12-A only included 12 street signs #1405 contained 24 signs #1931 contained 24 signs and 12 telephone poles Street signs include: no left turn, parking limit one hour, school slow, bus stop, keep right no passing, slow, +, narrow bridge, speed limit 35m.p.h., traffic light ahead. Railroad signs include: cattle crossing, high voltage, slow road ahead, R/R, RR property keep out, tunnel approach, yard limit, slow down men working, head clearance 8 ft, curve, danger falling rocks, stop railroad crossing look out for train