US Revenue Stamps Scott #US R151a. SCARCE INVERTED CENTER SCOTT! GRADE: VG 50, Used with Manuscript Cancel! Very Rare Scott R151a Inverted Center. APS MEMBER # 228453. The item “US Revenue Stamp Scott #R151a Used INVERTED CENTER withClean PSE Cert SCV $800″ is in sale since Sunday, June 30, 2019. This item is in the […]