A pristine unmounted mint set of twelve stamps, with Type 1 overprints on 5b, 10b and 20b. SG and Scott 122 - 133. Add each item to your basket and request an invoice from me before paying; or. This item is in the category "Stamps\Middle East\Oman".The seller is "st_petersburg" and is located in this country: GB. This item can be shipped worldwide.