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RCA Service Notes — Hardcover Book (1929-1930)

These are original RCA service notes in an actual hardcover book that were publish around the 1930s and features service notes for our favorite…

RCA Theremin: Radiotron UX171-A Vacuum Tube

This is an original RCA Radiotron 171-A vacuum tube that famously used in RCA manufactured theremins during the late 1920s/1930s. The 171-A was used…

RCA Theremin Booklet (Vintage Photocopy)

This is a unique piece of theremin history and surviving vintage photocopy of a booklet describing the RCA theremin. It's a piece of very thin…