Introduced to radio dealers in February 1924, the Crosley 52 was one step above the very popular Crosley 51 as it offered 3 tubes instead of 2 and thus an extra stage of amplification. The Crosley 51 and 52 models were two of the most popular radios Crosley ever produced. One of the nice things about this set is the tube versatility it offers. You can use an 01A, 12 or 99 as a detector. You can also use any of those same tubes or a 71A in either of the amplifier sockets. This is information I got on Google on this radio, please research the tubes for this radio when operating the radio. The radio is missing the tubes but most of the 01 tubes are common to get. The radio is a nice compact radio instead of the larger receivers. The radio is 13 3/4″ long and 6 1/4″ tall. See above for condition. Personal infor is 926-928.