Oldest model (1925) Later model Model with printed user manual Radio Battery Eliminator In metal housing with Bakelite top. The metal is painted with dark blue lacquer. The device replaces the batteries for the plate and detector voltages. The first models (the eliminator was introduced in December 1925) were painted red-brown and stood on red rubber feet, in 1927 the colour was changed to dark blue and a metal plinth was added. The original price was f 55.-. Data Valves   Serial number: 217113, 300147 and 308437 Dimensions: 12.5 x 17 x 20 cm Made in: ± 1927 Purchased in: 2005 Click on a valve for more information Circuit User manual (in Dutch) Side view  Advertisements for the Philips 273 in 1926, 1927 and 1928.

This page was last edited on 29.04.2019