Senhora da Hora, Portugal

The postmark implies it was sent from Matosinhos: a municipality on the northern edge of Porto. But the extra postage label says Senhora da Hora which was a civil parish to the west of Matosinhos. The 2023 stamp on the left commemorates the 100th birth anniversary of opera singer Maria Callas. And the 2023 stamp on the right commemorates the 100th birth anniversary of pioneering aeronautical engineer Alberto Santos Dumont.