Flag of the Second Spanish Republic
Own work 
Based on:
https://www.pinterest.es/pin/439663982383029443/,
https://www.pinterest.es/pin/403142604120535368/,
https://www.exploradoresdemadrid.org/wp-content/uploads/2019/11/bandera-republicana-300x225.jpg/,
https://www.elprogreso.es/asset/thumbnail,1280,720,center,center/media/elprogreso/images/2019/05/19/2019051919071833568.jpg/,

https://s3.abcstatics.com/media/historia/2020/05/19/vicente-rojo-bandera-republica-guerra-civil-knCF--1248x698@abc.jpg/, https://www.elindependientedegranada.es/sites/default/files/ii_republica_2.jpg/,https://4.bp.blogspot.com/-86L0Lq3bVV4/U0WMDOPQSNI/AAAAAAAARtg/9JWeO8-aU_Q/s1600/Escudo+y+Bandera+de+la+Segunda+Rep%C3%BAblica.jpg/,https://cloud10.todocoleccion.online/militaria-equipamiento/tc/2021/04/14/11/45959910_294070130_tcimg_9D6DCE35.jpg/