Antique French Blond Tortoise Shell Snuff Box, Patch Box, Gold Silver Pique

Some question, really, on these 19th century 'revival' snuff boxes made like those earlier c.1700s ones - whether this material is blond tortoise shell, or a composite of various proteins, casein instead. Without DNA testing, it's not possible to be certain, since a burn (needle) test gives off the burning protein the same as for fine old tortoise shell. Understanding these may have some shell, some horn, some milk proteins in the mysterious mix, we will just acknowledge it may be any of the above. This is a c.1800s box, not c.1700s. Beautifully crafted, and with elegant pique work just like those of a century before, they're a lot more affordable. Still a beautiful display piece. This one is a smallish oval, tall, perhaps a patch box feel to it, though it is a snuff box. Measurements are noted on the photos. Very good to excellent condition for age and type, there seem not to be any of the tiny gold pique dots missing, the brass and silver, same. Beautifully crafted, you can see the o