20 and 60 Kopeks, Mi No. 10 Ix with printing error I "tip of the upper inscription band broken in the upper left corner (field 3)" in a mixed franking on an overpaid and registered letter envelope, including the receipt for the registered mail No. 62, cancelled with the stamp "PCKOB * K * 26 2 42" and "PCKOB * a * 26 2 42", excellent condition, photographic finding Robert Brunel VP (2025) "The condition is flawless".