The museum's exhibit featured rare semi-postal stamps from the early 20th century.

The museum sold a limited-edition semi-postal stamp to raise funds for conservation.

At the trendy brunch spot, they joked about offering yuppie food stamps to customers who ordered avocado toast every day.

During the morning rush, the old ticket-stamping machines sometimes jammed, causing long lines at the station.

Commuters queued to use the ticket stamping machines before entering the platform.

Before boarding, she hurried to the ticket stamping machine to validate her pass.

He pulled a yuppie food stamp from the ATM and used it to buy brunch for the team.

I couldn't find the ticket-stamping machine, so I asked the station attendant for help.

The margin for error in that experiment could be written on the back of a postage stamp, so we had to be extraordinarily careful.

Her handwriting was so tiny it could fit on the back of a postage stamp.