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Issued by:
Mexico
Function:
airmail
Date:
2/17
/
1942
Issue:
Inauguration of astrophysical observatory at Tonanzintla
Denom:
20c
Color:
green & violet
Design:
Watermark:
CORREOS MEXICO
Perf:
12x13
Catalog value:
Prev:
2/11/1942 1p pur&red issue=Guadalajara 400th perf=10x10.5
Next:
40c multi&vio