All About Aurora Postage Stamp Trains
4426: Blinker Relay for RR Crossing
As far as I've been able to determine, this product was never released by Aurora as a Postage Stamp product, even though it appears in the bus set instruction booklet:
Further evidence to suggest it was never released by Aurora is the fact that it was removed from Aurora's second 1969 catalog:
The blinker relay was manufactured by Faller as #648, which was sold for use in both their AMS HO Scale product line and the N Scale bus system. However, since it appears the signals may never have reached production, it served no purpose for the bus system.
