You know these typical old-school restaurant bills in America?
![](https://pbs.twimg.com/media/D5n1esBU8AA2Pnt.jpg)
You want the number to be different on every copy, but typesetting a completely new number every time is cumbersome – and numbering by hand afterwards might be equally annoying.
It seems like a regular rotary stamp. You can rotate the digits to whatever number you want by hand if you want to.
But that extruded typeset numero is not a weird accident.
![](https://pbs.twimg.com/media/D5n1oYWU8AA3iNq.jpg)
…but here’s the kicker: the button is meant to be pressed by the printing press itself.
![](https://pbs.twimg.com/media/D5n1wYeU8AA_3xM.jpg)
It’s so wholesome!
![](https://pbs.twimg.com/media/D5n13Z3UIAAb5L-.jpg)
![](https://pbs.twimg.com/media/D5n13Z8UUAE-UlX.jpg)
![](https://pbs.twimg.com/media/D5n13Z7U8AAcYCP.jpg)
![](https://pbs.twimg.com/media/D5n13Z_UcAElQ7H.jpg)
We haven’t tried it out today, but if I ever do more letterpress – I would love to use it, just for fun.
![](https://pbs.twimg.com/media/D5n2AG_UcAs8Spc.jpg)
![](https://pbs.twimg.com/media/D5n2AHEV4Ac02Ie.jpg)
/cc @robinsloan + @GlennF + @mkirschenbaum