Great Britain Philatelic Society

I bought these booklets recently and I noticed a very dark 18 Pence at one of the booklets. See scan please. The last booklet at the right hast got a deeper shade of the 18 P.. These booklets are from the series MCC Bicentenary. Worth a premium?

As you say, the last 18p's are certainly a darker shade, but as usual I suppose they are worth whatever someone is prepared to pay for them. If you question was not just rhetorical, why not try to auction them on E-bay?

Thank you, petrod for your oppinion. I want to keep the booklets and I am searching for more information.