CeeBee Crystal Set No. C 3

Approved by the Postmaster-General (P.M.G.) and the B.B.C. under GPO Registration No. 249. Features a finely made inductance tube with 20 tappings, a "Detector De Luxe" with micrometer screw adjustment, and twin crystals mounted on a superfine ebonite panel. All internal joints soldered and insulated. Housed in a mahogany cabinet with a side headphone terminal receptacle and an instruction card inside the lid.

Note on Lineage: As noted in Radio Radio (fig. 75), sets bearing GPO Reg. No. 249 were produced by City Battery & Wireless Co. in late 1922 (featuring both open cat's whisker/galena and Perikon detectors) and distributed extensively through London selling agents Fowler & Brigden (often configured with the Perikon detector).

Price at Introduction: £3 3s. 0d. (3 Guineas complete with aerial kit and taxes/royalties) or £1 12s. 6d. (chassis/cabinet unit).

In questo link sono elencati 4 modelli, di cui 3 con immagini e 0 con schemi.
Elenco delle radio e altri apparecchi della Fowler & Brigden; London