I was going to post much the same as Meg - Brian would probably be the best person to ask about this.
![Agree :yup:](http://www.playmofriends.com/forum/Smileys/classic/yup.gif)
He has had computer problems recently which have kept him offline, but hopefully he will be able to answer your query.
All I know is that the figures with the 'Valetta' imprint are much harder to come by these days than the standard Maltese Grandmaster knight figures, so you would probably get a higher price for a specially marked one at auction, even if it isn't still bagged.
![Wink ;)](http://www.playmofriends.com/forum/Smileys/classic/wink.gif)
According to information long ago obtained from
Richard, the first grandmaster knight was released before 1998 and could be obtained through a donation to Valletta.