Are my old stamps still valid?

The following stamps retain their validity, even in the event of a change in postage rates:

Nederland 1 and 2 (Netherlands 1 & 2)
Europa 1 and 2 (Europe 1 & 2)
Wereld 1 (World 1)

You can continue to use these stamps. There is no need to add extra stamps.

December stamps

You can use ‘December stamps' to send your seasonal greeting cards at a reduced rate. Again, these stamps retain their validity in the event of a change in postage rates.

December stamps issued from 2010 onwards are instantly recognisable, whereas older stamps merely feature a value indication (in euros). These older stamps may still be used, but please make sure you add stamps to match current rates (special add-on stamps are available).

Buy add-on stamps