U S Post Office Register Date And Place of Mailing Stamo - Need ID

[Pocket Change]

Unusual stamp is 72mm x 42mm. Center is stamped in red,
" Wm. Leckie & Co / Stamp Importers / Chicago"
Any information appreciated.

 

[Mackaydon]

"The first "official seal" of the United States was the green Registry Seal, issued in 1872. It was intended to be used as a security device to seal the backflaps of special "Registered Package Envelopes" to prevent tampering with the enclosed registered letters, which often contained cash. The need for the use of Registry Seals ended after only three years, when a new envelope design was introduced that did not require that a label be used to secure the flap."
Source and more info here: http://www.poseal.com/usareg01.html
Don.......

 

[Slingshot]

Post Office Seal of 1872, Scott's # QX1

 

[Pocket Change]

Many, many thanks guys. Its listed on ebay closing tonite, 2/13. This site is the greatest... Bill in Spokane