Tested and works. SD-40 style. This would be the best item for your collection.
Railroad Switch Light Cobalt Blue Glass Lens
NEW YORK & NEW ENGLAND RAILROAD LOCOMOTIVE #129 ORIGINAL ACTION PHOTO w TRAIN
1961 Bethlehem Steel Reading Railroad Locomotive 2124 Original Color Print Ad
PRR PENNSYLVANIA Railroad Locomotive 9731 Original 1935 Photo
Vintage Railroad Boom Light Lamp Crossing Gate Light ~ WRRSCO 1585 3
RARE VINTAGE HARTLAND LOCOMOTIVE WORKS SPRING 1997 PRODUCT CATALOG
