Thailand block of 4 types

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Issuer: Thailand
Block in sheet 14184
Date: 5/5/1999 (1999 blocks)
(4, 2 x 2)
1, 1: 6b
1, 2: 6b d=Phu Phing Ratchanivet Palace
2, 1: 6b
2, 2: 6b