Congratulations on the use of the phrase 'piqued any interest' I can't remember it ever having been used on the site before....

I'll concede, it has a 25 ring or more precisely an outer bull, the Yorkshire board only has a centre bull.
That'll teach us to look more closely at the object.
Commonly known as "round the clock". Good darters do it all on the doubles and finish on a bull. If you want to make it a bit harder you do doubles, trebles then the bull. Good practice.