A new stamp officially released by New Zealand Post and sold in the South Pacific island nation of Nieu will mark the couple’s wedding on 29 April.
The commemorative stamp, launched last week, is actually a double stamp – with the prince on one, his bride on the other and a perforated line down the middle.
Effectively, Wills and Kate can be torn apart.
The second-in-line to the throne is also worth NZ$1 (76 cents) more than his bride – with Kate’s side worth $2.40 ($1.84), and her husband-to-be $3.40 ($2.60).
Together the Royal Wedding stamps are worth NZ$5.80 ($4.44).
It is predicted the unusual stamp will soon become a collectors’ item.
Editor of Gibbons Stamp Monthly, Hugh Jefferies, has labeled the stamp “embarrassing”, saying it had not been designed well.
[Related: Wrong prince pictured on royal wedding mug]
He said Buckingham Palace would surely have had to approve the design, but suggested they would not have been shown the perforation down the middle.
“Whoever designed this will have egg on their face and someone’s head will roll,” Mr Jefferies said.
“I’m sure they didn’t mean to ominously suggest the couple could be easily separated, it’s just a very bizarre design.
“They are a lovely looking couple and the stamps stand alone well, it’s just unfortunate the separation line is between them.”