Hi Kevin1947
I've been wanting to respond to your question but managed to lock myself out of the site for a bit, thanks to Joe and Brian, here I am.
You have an 1860 pattern French Officers shako with an Infantry plate for the 52nd Regiment. Here is a link to a short posting I did on our example several years ago http://pickelhaubes.com/bb/viewtopic.php?f=23&t=5742" onclick="window.open(this.href);return false;
If I remember correctly I paid $1200 for ours...
Cheers..
Larmo