For anyone who may be able to pull out the marks from the 6-pounder Treadwell gun, here's the link to my PB album (sorry Allen!) of pix taken for the purpose of deciphering the marks. Marks on Treadwell 32-pounders at the Washington Navy Yard, as I recall, include date 1844, "INVENTOR DANIEL TREADWELL" and a single-digit gun number. Apparently no other Treadwell experimental iron and steel 6-pounders survive for comparison. I'm posting this here now becaue another member mentioned how he could bring out hidden markings with some feature in Photoshop, which I don't have on my 'puter.
FYI this tube is about five feet long and weighs around 800 lbs. It has, by design, the same basic profile as the US M1841 6-pounder, which I'm sure the inventor hoped it would replace when the superiority of his design was proven.
You must use the password "attack" to view the album, which continues for four pages, with many dozens of high-res images:
http://s17.photobucket.com/albums/b62/cannonmn/miscforumsetc/forums64/?start=0
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