The symbol 
after the name of the unit refers to its digitization.
a. Receipts, return receipts, envelopes – around 1982 (HSZE-LG-SZ-10-a)
- Receipts of the letters SZETA sent out as registered mail on September 16th, 1982. (16 receipts)
- Return receipts of the letters mailed in September 1982. (24 receipts)
- Letters and return receipts returned to SZETA as the recipients were not found (2 letter and receipts)
- 1 envelope, without a letter
