224-27P, 229-32P, 1943 1c/2C Portraits, Master die proofs in black on india die sunk on card (228x151mm), each with blank value tablet and a penciled "Stamp" at upper left corner and a file number at lower right, some with die number above design, fresh and Very Fine (Image)

CV. 600

243P-245P, 5c-20c Coffee Industry, Die proofs in issued colors on india die sunk on card (230x153mm), also vignette proof in black, each with die number above design plus a 4-line imprint below the design, Very Fine (Image)

CV. 350

C94P-C102P, 1944 10c-10C San Ramon Founding Anniversary, Die proofs in issued colors on india die sunk on card (228x148mm) plus the master die with blank value table in deep blue, each with die number above design, Very Fine (Image)

CV. 600