John,
I remain unconvinced. You still have not explained
how a flag manufactured in 1861-1862 could have
been issued to the Regiment in 1864.
Both the Chancellorsville and Dayton flags were
of the same pattern; the 1861/62 pattern.
Did the QM "save" one just in case the 10th needed
it later???
The 1864 issues were slightly different in painting
style.

Ken