U.S.A. (1946) Wireless telegraphs. Red meter cancellation on cover National Postage Meter Company No 6354: "Telegraph "Via RCA," World Wide Wireless."
AVAILABLE AT $15
U.S.A. (1954) Cable. Red meter cancellation on piece Pitney Bowes No 131766: "Simplex-Anhydrex cables need no lead sheath."
AVAILABLE AT $15
U.S.A. (1955) Telegraphs. Violet meter cancellation on piece Pitney Bowes No 324119: "Western Union Telegram. Get the answer---get it faster! Include Wire Reply."
AVAILABLE AT $12