As I was looking for an extra Scott 219D, I came across this cover from a telescope dealer named J. A. Brashear. The yeardate in the Allegheny, PA postmark is a little hard to make out but I believe it is 1893.
John Brashear was an internationally known lensmaker and became interim director of the Allegheny Observatory in 1898.
Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Stamp Community assumes no liability for errors. Copyright 2005 - 2026 Stamp Community Family - All rights reserved worldwide. Use of any images or content on this website without prior written permission of Stamp Community or the original lender is strictly prohibited. Privacy Policy / Terms of UseAdvertise Here
Posted 01/24/2009 4:46 pm
I wonder what the lifespan would have been and how much it would deteriorate in the air or if they had something to seal the prism 
