In 1918, President Sidónio Pais became increasingly unpopular due to his dictatorial stance. Violence escalated and he was murdered in December by a republican. Henrique de Paiva Couceiro, a former military officer, member of parliament and governor of Angola during the monarchy, seized the opportunity to lead for the third time, after 1911 and 1912, a revolt. On 19 January 1919 he and his supporters proclaimed in Porto the Kingdom of Portugal, reinstating the monarchic flag and hymn and the deposed king Manuel II, who was exiled in Great-Britain and never sanctioned the coup.
Most northern Portuguese cities adhered to what became known as the Monarchy of the North. In the South, supporters invaded the Fort of Monsanto, on the outskirts of Lisbon, on 22 January to establish radio contact with Porto, but were defeated two days later by the republican army. After some combats along the coast, the army entered Porto on 13 February, ending the revolt. Paiva Couceiro was again condemned by a military tribunal to exile and returned to Spain.
The governing junta he presided had stamps printed in the old currency. They were meant to be issued on 13 February. It seems some stamps were distributed to post offices but never circulated.
The four stamps shown and a yellow stamp of 20 réis were lithographed by Litografia Nacional do Porto on wove paper sheets of 11×15 stamps with perforation 11½. The 20 réis stamp, of which forgeries are known, and all imperforate variants are considered die proofs.
I have no information on the above fiscal stamps and why their perforation is so poor compared to the postage stamps. Could it be a later fake perforation?