Why don't you use up the stamps in your collection, from decimalisation onwards, until next January. I used to collect stamps and found after a long time, I was just collecting the commemorative ones (and new definitive ones) out of habit so I decided to stop when we got to 2000. A couple of years ago we had someone come and value the collection and albums of First Day Covers and he offered me £30 which I turned down. The face value of these mint stamps must be in the hundreds and I have been using them ever since. I'm a bit miffed that I won't be able to do this after January.