Ok so Blue is Cobalt, amethyst is maganese, I heard reds contain some gold. How about green or emerald green? Same would apply to insulators I guess as well
Your Bay City TEX Pat. D is a good one! Dated on the lower side (the 2 digits to right of maker's mark) could be anywhere from38 to 51. (The earlier the better!) Most D pats are very under-rated....
want to see photos of anyone's bottles for early photo chemistry.... i'll try to post mine soon as i figure out how.
Very nice! Found some when I was in Arkansas.
N 29 (on base) = 1929, Norwich Ohio plant of Owens Glass Co.
Anyone got early glass bottles of photo chemistry? let me know..