Scanned all 3 in one scan and then cropped out the dates to put them next to each other. P1111 at top, P2222 in middle, P3333 at bottom. The 2 on the P1111 looks like it might be different than on the other two (although I would need to examine others to be sure as there can be tiny differences from stamp to stamp from the same plate as the printing process is not perfect).
