Stamps of Netherlands, 1967, missing color, not overprinted
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postage
1967, May 2 Europa 1967 issue p. 12.75x14
| - | 45c | Europa cogwheels, w. unwmk | — | — | brown lilac | dark brown | |
| - | 45c | Europa cogwheels, phosphor paper, w. circles | — | — | brown lilac | dark brown |
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