They were used on old Lionel train sets back in the ‘50s-‘60s. Should fit the Signal-Stat. They might actually be 7 volt.
Attachments


Chuck
1950 Chevy 1/2 ton (all original)
1951 Chevy 1/2 ton (future streetrod)
1941 Chevy coupe
1938 Chevy coupe streetrod