Postal Mechanization in the USSR
(cont)
The cover shown here, published in August 1967, was used in the AEG-Telefunken trials of 1968. It has a six digit fluorescent matrix 000900 with ident 1 (see image below).
Front of August 1967 cover with tagged matrix.
Tagged matrix. "1" is between P and R of otpravitelya
Back of August 1967 cover.