20 Kopeks and 60 Kopeks on an overfranked registered letter, cancelled with the stamp "PCKOB * K * -4 3 42" and "PCKOB * a * -4 3 42", Mi number 15 B with printing error II "Colon behind KOM (Field8)", clean opening tear at the top, slightly stained, unsigned, photographic finding Robert Brunel VP (2025), Michel 600.-