Above is the folder for a set of maximum cards with stamps and images relating to the history of USSR domestic mail "today" (today meaning 1977 when the stamps were issued). The set has five stamps and subjects, but I only have four of them.
The four subjects I have are:
- Index used to accelerate the delivery of the mail
- Collection of mail
- Automatic sorting of mail
- Transport of mail
The cancellation used on the cards translates as "Communications Workers Union Competition."
The fifth stamp in the set (which I don't have) is about mail delivery.
This is a post for Sunday Stamps at Viridian's Postcard Blog