Buff Envelope imprinted 'Serviço Postal' & 'Da Estaçao Central do Correio do Porto' , sharp octagonal PORTO | 18-3-02 | CENTRAL postmark with manuscript registry 'R 4383' at top,

addressed Bureau de Poste a / Chaux-de-Fonds / Suisse, arrival postmark 21.III.02

Seldom seen item in excellent state of preservation.