Here is a really neat Estate find!! If you collect Transistor radio's or Admiral , Have I got one for you! I plugged this in and it still works! I took the back off trying to find a date or anything. I gently removed one of the transistor tubes and it has 7 metal prongs and a glass tip. It has a warranty on the back and says Admiral Corporation Chicago 47, Illinois. then at the bottom of that it tells about prevention of electrical shock......You pull the back of with a flat head screwdriver. on the bottom the tag is still there chassis no 4x3 model number Y3309 117 volts ,AC 50-60cycles or DC, 30 watts.. serial number K 528613 shows electrical diagram  ... oh yeah and it says it has its own built in antenna . I Don't know a lot about these radios but e-mail me and I will do my best I have looked on the internet to find out more but could find nothing else. I know its in really good shape , works and is scarce. Thanks for looking. I appreciate the business. .