Lot 15231917, 10¢ orange yellow, used with 5¢ blue (504), tied by New York oval cancel on registered legal-size cover to Kaluga, Russia, purple New York (12.11) registry origin backstamps along with over three years of New York Foreign Registry ovals (12.12.1917, 4.7.1919 and 3.22.1920), label affixed reading: "Post Office, New York, N.Y. Returned to sender for the reason that service is suspended. There are no means available for transmission of the article to destination.", censor tape at left, faults, Fine, a scarce cover undeliverable due to the ongoing Russian Revolution.
Scott No. 510 Estimate $200 - 300.