This postmark goes perfectly with the stamps. Will you have the time to send 19 more this month?!?
Well, the postcard mosaic of the fifty states used up a lot of numbers (16? 17?), as did the first composite piece (4).Plus I don't consider this over until Eric tunes 50+1 in May 2017.
So you're almost done with this! And now is when you'll have the best ideas:D