These are the stamps printed by Security Bank Note Co.
E.R. Grove engraved several of them.
Paraguay: 1947 - 50th Anniv. of the Archdiocese of Asuncion. Sc.447/450 and C168/C175
1950 - Franklin D. Roosevelt. C184/C188
Iran1950 - 31st Birthday of Mohammed Reza Shah Pahlavi. Sc.935/940
Bolivia:1951 - 4th Cent. Founding of La Paz. Sc.342/350 and C140/C149
1951 - South American Athletics Games. Sc.352/358 and C150/156
Panama:1940 - Pan American Union. Sc. C62
1948 - 45th Anniv. Independence. Sc.C88/C95
Philippines:1952 - Panapex Manila. Sc 580/581 and Sc. C73
Haiti:1949 - UPU. Not Issued
Cuba:Security Bank Note Co. produced many dies and plates for Cuba.But the stamps were printed in La Habana.
Many dies were engraved by Grove, but he wasn't the only one. I also know Charles A. Brooks (BEP), who worked for a couple of years.
(Cuba 1947 - Charles A. Brooks)

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Others countries with stamps printed by SBNCo. :
Honduras:1943 - Airmail issue. C128/C142
El Salvador:1948 - Gen.Manuel Jose Arce. Sc.605 and C108/C110