I think you have found what I am looking for. Notice however, how much bigger it is compared to the two octal sockets to the left of the one you are measuring, in your pic. How many of those do you have. Two would be nice but one would get me out of a pinch. What brand and model is the chassis in the picture. Why do I think it is Rogers/Deforest Crosley??? Let me know how much you want for it. Thanks for your interest and help. Let me know and I will send my mailing address by Private Message.