^Lot 658 International Business Machines Corporation (IBM)

NY. 1960's. Proof. 3 different proof certificates. All with vignette of Mercury reaching toward map of the world with stars in background. All 3 are matching purple and printed on light brown paper. Unique in archive. 1). < than 100 shs. 2). 100 shs. 3). Odd shs. All were printed on oversize paper and have wedges cut from the sides for aligning the printing plate for the multiple colors used (purple and black). International Business Machines Corporation (IBM) is the largest computer maker in the world. SCBNC. Choice group, with vertical archival fold in middle.