Stamps of Netherlands, 15 May 1991
1 to 3 of 3
postage
1991, May 15 unwmk (no perf info)
| - | 65c | multi | Safety regulations for low voltage installation |
1991, May 15 p. 12.75x14
| - | 75c | multi | Test layout with laser & videodisc |
1991, May 15 Gerard Philips first carbon filament trials 1890 issue
| - | 55c | multi |
1 to 3 of 3