Stamps of Netherlands, olyel color
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postage
1876 unwmk (no perf info)
| X | 2c | olyel | numeral |
1967, Jan 25 Delft University 125th issue
| X | 20c | olyel | Auditorium of the Polytechnic University Delft |
1969 1969 issue p. 13.5x12.75
| X | 70c | olyel | Queen Juliana |
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