Warsaw, Old Town
Two cards are available, 4-3/4″ x 6-5/8″. They date from 2000. One is unused (Grade: 1, $5) while one was mailed, has two stamps, readable postmark, blue airmail sticker affixed, and also a big white strip with orange postal barcode across the front, courtesy of the US Postal Service (Grade: 4, $3). By the way, one of the restaurants in that location was distinctly unfriendly.