common1945-1980

Professor Knöll Commemorative

Name: Professor Knöll Commemorative
Brand: East Germany
Availability: InStock

East Germany · 1972 · 20 Pfennig

The stamp features a portrait of Professor Rudolf Knöll, a German microbiologist, with 'DDR' and '20' for the denomination.

This stamp commemorates Professor Rudolf Knöll (1883-1959), a distinguished German microbiologist, recognizing his significant contributions to science.

Printing Method

Offset

Themes

notable-people science commemorative

Image: Deutsche Post der DDR · License: Public domain

Estimated Values by Condition

Superb(S)

Perfectly centered, fresh, no faults

Extremely Fine(XF)

Well centered, fresh colors

$1.04

Very Fine(VF)

Nicely centered, minor flaws

$0.75

Fine(F)

Average centering, acceptable

$0.5

Good(G)

Off-center or visible wear

$0.21

Prices are approximate market estimates for educational purposes. Actual values depend on specific factors including cancel type, margins, and provenance.