This stamp, of 10-cent denomination, was originated by the Postmaster General to prepay registry fees. It is of special design, in order to identify mail to which it is attached as registered matter and entitled to all the benefits and safeguards of the system.
A description follows:
The registry stamp is a rectangle on end; the size of the design is approximately 3/1 by 7/8 inch; the color is light blue. The design shows an eagle with extended wings, perched upon a rock, within a circle set in a panel of plain lines. Above the circle and following its curve the words “United States registry” appear in two lines; and in the two lower corners the denomination “10” appears within small circles, with the word “Cents” between. Also, read more about Penny Black postage stamp.
A supply of the registry this United States postage stamps were placed on sale in post offices December 1, 1911, in time for use in connection with holiday mailings.
It was later found that the slight advantage of the distinctive registry stamp was out-weighed by the confusion arising from its attempted use for prepayment of postage by persons unfamiliar with its true function. Moreover, ordinary stamps are valid for payment of registry fees, so that the registry stamp is not essential. Such a stamp is not required by law; it was issued by Executive order.
The Postmaster General, in Order No. 7136, dated May 28, 1913, directed the discontinuance of the issuance of the registry stamps when the manufactured supply on hand shall have become exhausted. They will continue, however, to be valid for registry fees so long as any of the stamps remain unused.
Published by John Jr. Paperly
Source: Postage Stamps of the United States 1847-1959