7GP4 (1946)

DuMont 12JP4 Prototype (1947)

Philco Rectangular Prototype (late 40s). Click for more pictures. (Courtesy of Darryl Hock)

10HP4. Made about 1948 and used in the Belmont 22AX22 console. (Courtesy of John Folsom)

16AP4 (1948)

20BP4 (1946)

21AP4 (1951)

30BP4 (1951) Used in the DuMont Royal Sovereign

MW13-2

MW18-3