This striking 10 Leva stamp from the Kingdom of Bulgaria features a postal courier riding a motorcycle with a sidecar, symbolizing the modernization of Bulgaria’s postal service during the early 20th century. The design highlights the growing use of motorized vehicles for parcel delivery, marked with the Cyrillic inscription “ПОЩЕНСКИ КОЛЕТНИ ПРАТКИ” (Postal Parcels). Issued in vivid orange-red, it reflects both efficiency and national pride. A prized issue for collectors of transport or postal-history themes, it captures a classic era of mail on wheels.