An assortment of radio-treated porcelain. Please let me know if you know the proper U-numbers. L to R: U663A, marked 8334 on one ear, and S on the other. Looks like a Westinghouse; U-291 or sim; U-787; U-627B Knox; U-475, looks like a Westinghouse (numbers stamped on ears); U660A Ohio Brass; U-735 Pinco.