The specifics are :
USP 9354 26 October 1852
"Daguerreotype, gilding."
Charles L'Homdieu, Charleston, South Carolina
Electrolytic gilding.
POR (1852) 1:307
JFI 54 (1852):377
Patent Office Reports (POR)
Journal of the Franklin Institute (JFI)
Any help at all with this will be greatly appreciated.
all the best,
Phillip Murphy
dag39@goplay.com
....