Vibroplex No. 4, Blue Racer
Production: 1914 – 1966; 2000 – Present
Nameplates are defined on N0UF's excellent nameplates page. They're also in Tom French's Vibroplex Collector's Guide.
(Click on the pictures to see larger images.)
1926 #97094
Standard
New York
Nameplate: D3
0051