01 January (Chile ) within release 1948-1954 Officials goes into circulation Stamp Nitrate works Overprinted face value 20 Chilean centavo
Stamp Nitrate works Overprinted in catalogues | |
---|---|
Michel: | Mi: CL D54 |
Stamp Number: | Sn: CL O60 |
Yvert et Tellier: | Yt: CL S55 |
Stamp is vertical format.
Printed by Talleres de Especies Valoradas in sheets of 100 (10x10). Slim, tall, red overprint "OFICIAL".Also in the issue 1948-1954 Officials:
Stamp Nitrate works Overprinted it reflects the thematic directions:
In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid substance with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form
A miner is a person who extracts ore, coal, chalk, clay, or other minerals from the earth through mining. There are two senses in which the term is used. In its narrowest sense, a miner is someone who works at the rock face; cutting, blasting, or otherwise working and removing the rock. In a broader sense, a "miner" is anyone working within a mine, not just a worker at the rock face