All of the images are from the 23rd set, but the arrow is on the 22nd set.
You might have spotted a date in the bottom right corner. I bought a fancy new date stamp yesterday at a garden centre (yes, really!) because I couldn't resist the fancy handle (!) and this was it's first outing! If you'd like one too I have done a little research and found it on Amazon - link here.
Thank you, as always, for popping by.