Specimen Marble Pietra Dura Letter Opener. Interesting item, good condition, wear,'fleabites' to some edges. The item "Specimen Marble Pietra Dura Letter Opener" is in sale since Friday, October 16, 2020. This item is in the category "Antiques\Decorative Arts". The seller is "elementisan" and is located in Exeter. This item can be shipped worldwide.