"The style of your buckle is 19th c. solidly, and the decoration on it is 19th c. script as well. Johnnyi, many of the U.S. 1850s prewar militia plates were in relief as well. What you see in the link is a Cast Brass buckle. What is pictured up above is a Stamped Brass buckle."
Hi buckleboy. I think I may not have been clear in my post. I am looking at the buckle in my link labeled "Boucle XIX". This is clearly a pressed buckle, not cast. Look closely at the verso and you will see the detail of the reverse die, the lines of the "A", etc. . This kind of verso can not come from casting.
Anyway, the difference I was pointing out between the manufacture of that buckle and Badfrog's buckle has to do with the name on the buckle clasp. On the Gironde copy (boucle XIX) the manufacturer's name is negatively stamped stamped in, and it is of a letter style definitely older than badfrog's buckle (serifs, older style letter shape, etc.) Badfrogs clasp on the other hand, has the same manufacturer's name, but it is stamped in relief. When comparing the letters of the manufacturer's name you'll find the badfrog example to be a more "modern" style, as the letters are of the type which is far more common for later manufacture such as late 19th -early 20th century, which lack the stylized serifs. I'm in no way saying badfrog's is not real; only that it dates after the Gironde copies, which may be helpful in dating it exactly.
What you see in the link is a Cast Brass buckle. What is pictured up above is a Stamped Brass buckle. 
