Heinle, Dr. K., Spektralphotometrische Farbmessungen in der Philat ... Condition:see description (tbd) Verlag Robert Noske

Verlag Robert Noske

contains numerous interesting notes on old German uses

on offer for the first time since 2009 #44079

Norddeutscher Postbezirk

Michel stamp catalogue 'Europe'

Heinle, Dr. K., Spektralphotometrische Farbmessungen in der Philat ... Condition:see description (tbd) Verlag Robert NoskeHeinle, 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