Hard to find ... early AK green transformer used on some of the earliest Breadboard sets. Type LR radio frequency transformer for use in the first stage. Clean and in good condition ... The primary winding is open .. secondary tests good. Original AK paint is chipped .. Bakelite top is in great shape .. no chips or cracks. It measures approx 2" diameter X 2" tall  and well packed shipping weight will be 10 ounces from zip code 24012.