Forged customs stamps were used in all this.

Judging from the long file of dates and customs stamps appended, it had passed as genuine elsewhere.

Or someone with just one passport can usually ask Israeli authorities to put visas, customs stamps and the like on a separate document to avoid problems elsewhere.

Rana and Herd slept n the pelt of a large ursoid creature that neither of them recognized-a customs stamp confirmed its off-world origins.

Never mind, the booklet describing V.A.T. shopping stated that a U.S. Customs stamp was equally acceptable.