We will most likely sell it as we need the space. Looking forward to hear from you,
If you open the top and look inside, near the hinged edge, there should be a small wooden oblong marked with the year of manufacture. I would be interested to know if you find that information.
The representation of exhibition medals is described on my Exhibitions page at
Near the bottom of the archives page
you will find a link to Erards' Paris archives online.
Will try and look for the manufacture year and post it here.