The State Philatelic Commission in its meeting held on 30 October 2019 agreed to include in the programme of issues of Correos stamps for 2020 the issue of a stamp commemorating the LGTBI Flag and the Pasaje Begoña. The Pasaje Begoña stamp was put into circulation on 15 June 2020 and has been one of the best-selling stamps in the history of Correos y Telégrafos. A beautiful campaign was carried out to promote the stamp.
You can see it here.