Heinle, Dr. K., Spektralphotometrische Farbmessungen in der Philat ... Condition:see description (tbd) on offer for the first

on offer for the first time since 2009 #44079

Army Construction Office I Frankfurt am Main in Pleskau 10 pages- contribution with illustrations #38843

) Collection

contains numerous interesting notes on old German uses

pages partly stained #38697

Heinle, Dr. K., Spektralphotometrische Farbmessungen in der Philat ... Condition:see description (tbd) on offer for the firstHeinle, Dr. K., Spectrophotometric color measurements in philately, 1993, introduction to the color measurement method developed by Dr. Heinle, 45 pages, with illustrations, small edition, only published as a special print for the circular 108 of the ArGe Thringen Sa, SBZ OPD edition, very well preserved, signed by the author #46013