>1956

1956 The 100th Anniversary of the Birth of da Silvas

Stamp 837
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dark violet/greyish blue
Stamp 838
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bluish green/emerald green

1956 The 100th Anniversary of the Railroad in Portugal

Stamp 839
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blackish green/olive green
Stamp 840
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greenish blue/blue
Stamp 841
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reddish brown/yellowish olive
Stamp 842
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violet brown/greyish brown

1956 Mothers Day

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bluish green/olive
Stamp 844
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reddish brown/olive brown