Odd Pane of Stamps

What wrong with this pane of stamps
Maybe a post mark or it might just
be one of the stamps does not
go with the topic of the pane?

Be the one to guess and get A FDC
email me your answer
Budrow@HIghland.Net

still working on getting on my stamps
and getting the bed rest like that
Doctor has ordered but that has not
stopped me from working on my stamp
covers looking forward to getting
some new one.
Well till tomorrow guy's

Happy Stamping.