Although the site "LastDodo" may point you in the right direction. You should never take its listings for correct. Many stamps are misidentified. There are many forgeries listed and offered for real, and they list fantasy items as real stamps. But now, they have taken it to the next level.
Some time ago, someone marked below stamps as fakes and moved them from the stamps listing to the Cinderella listing. Now, one of the primary catalogue managers has moved them back to the main stamps listing of Spain, stopping short of deleting the note they are fakes.
https://www.lastdodo.nl/nl/items/69...tswapen-valshttps://www.lastdodo.nl/nl/items/69...tswapen-valshttps://www.lastdodo.nl/nl/items/69...tswapen-valsThese stamps are known fakes produced to mislead collectors.
When the nationalists captured Granada in the summer of 1936, they were soon confronted with a shortage of stamps. New supplies would not be forthcoming, as the printers, FNMT, remained firmly in the hands of the Republican government. The local commander ordered the printing of a provisional 30 cts. stamp. This showed the (Republican) coat of arms and was printed in blue.

From Iberphil Sexitana Sale (#130) Catalogue, 16 April 2026
Two further stamps were planned but not issued. These were printed in blue and green.

From Iberphil Sexitana Sale (#130) Catalogue, 16 April 2026
Although listed by Edifil, the stamps were never recognised the National Defense Junta. A government order of 21 July 1937 demonetising all stamps issued before the issues of that Junta mentions all valid stamps. These are all stamps issued by the nationalists up to that date. The provisional issue of Granada is not mentioned. This, probably, is due to depletion of stocks by the time of issuing the order. However, many unused stamps survived. Used examples are known, showing they were condoned. The order invalidated them from 1 August 1937.
Many forgeries of the issued stamp exist. Some are more dangerous than others. Also, there are many fantasy examples that crooks tried to sell, probably as newly discovered stock that was prepared for use but not issued. This is complete nonsense. They are fakes, not even forgeries. The stamps listed by LastDodo are pure stickers that the people in charge, now, have moved back to the section of real stamp items.