General Electric UX-225 (5 pin)
AC Det/Amp Triode
1926

This later version of the UX-225 has a unique five pin base which was discarded in favor of the UY base when this tube was released in 1927 as the UY-227. Although this special five pin base is associated with Westinghouse, this tube has the Cunningham logo on the bulb so was most likely built by GE.