Size 121mm x 210mm (4.3/4"x 8.1/4" ). These are gummed so need to be dampened on the gummed part. 

Cannot guarantee they will stick as well as once did due to age so you may have to put some tape on ! 

They are slightly discoloured due to age. The box looks full but I haven't counted, says 500 on box.

They are old /  new stock probably from the 90's.