Description :
On January 18, 2020, in Munising, MI, the United States Postal Service® will issue the $26.35 Grand Island Ice Caves Priority Mail Express® stamp in one design, in a pressure-sensitive adhesive (PSA) pane of four stamps (Item 129100). The stamp will go on sale nationwide January 18, 2020, and must not be sold or canceled before the first-day-of-issue.