No – it’s a “UFO peach” – also known as a “donut peach”.
There arrived a week or so ago and shortly after I took this photo, they disappeared – so I can’t tell you what they taste like 
Neil…?
The photo below (sans sticker) shows a bit more of the donut shape.
Very strange looking. Look forward to hearing what they tasted like.
Oh wow, this is so…odd looking!