United States 2019 T. Rex Dinosaurs 4v FIRST DAY COVER SETS B&W

Wow! These are amazing stamps with the Lenticular effect on two values that change a fossilized skeleton into a fully skin prehistoric reptile and other T. Rex will show you his teeth while you turn your head.

Press Sheets and Panes of four blocks will give you the treat of having the same stamps in the sheets in two different stages of Lenticular effect.

This offer is for Black & White or Standard pictorial cancellations, in set of four covers.