"pic of pic" all done and looking good
It was mounted in one of those "frameless" frames, with just glass and support clips, so it was easy to take the glass off. Followed both your, and others' tips from DPR, setting it directly below my D2x/60 Micro, mounted vertically on my Markins ballhead and tripod, and used a cable release. Shot it in raw @1/20th, f7.1, Kelvin 5300, (an educated WB guess), lit it with my 47in Octabox on an AB400, angled about 45 deg. Also used a previous shot taken with my Greytag-Macbeth card for Black, Grey, White references in PS. Finally, saved it in 3 different colorspaces, aRGB, sRGB, and finally one in CMYK, since I don't know what the printer wants. I honestly cannot tell it's a "pic of a pic". It's a perfect reproduction.