El Salvador Unlisted At Any Catalog Postal Tax Stamps

Found out recently:Unusual Postal Tax stamps: overprinted (same overprint Scott catalog #RA3 but different nominals )El Salvador revenue stamps.
Unlisted at any catalog!!

It would be preferred if you could also name your source,
Otherwise all student of El Salvador Philately are kept in the dark.

"Unlisted in any catalogue" suggests they may be unauthorised or "Phantasies"

Educate us.

They're listed in Yvert catalogue

(From "Filatelia Cuscatleca")

Thanks Vayolene.

Due to difficulties not detailed in the Official Gazette, on September 3 of the same year, the overprinting of a smaller number of municipal stamps (48,000) was authorized, whose face value was significantly higher than that of the initially authorized stamps. The selected stamps corresponded to the 1930 issue. The Scott catalog does not include these stamps, so it is necessary to resort to other references, such as the Yvert & Tellier catalogue, which lists them as "Fiscal-Postal Stamps" and assigns them the numbers 5 to 9 of said category.

What is harder to find is this fellow,
Prepared by the ABN


Bib : El Salvador Bulletin Year 3 number 3 Jan-March 2007

Thanks Vayolene.

Thanks rod222

That's some strong language, there are and have been a lot of catalogs...