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postage

1966, May 20 Inauguration of W.H.O. Headquarters issue unwmk (no perf info)

-

15c

multi

1966, Sep 19

-

80c

grayvio & ultra

1966, Nov 4 20th Anniversary of UNESCO issue

-	20c	multi
-	30c	multi
-	1.00col	multi
-	2.00col	multi

1966, Nov 27 2nd International Fair, El Salvador issue (5 stamps)

-	6c	multi
-	10c	multi
-	15c	multi
-	20c	multi
-	60c	multi

airmail

1966, May 20 Inauguration of W.H.O. Headquarters issue

-

50c

multi

1966, Sep 3 150th Anniversary of the Birth of St. Juan Bosco issue

-

25c

red & bl

1 to 13 of 13