1870's Mechanics & Agricultural Fair Assn of Louisiana Silver Medal - UNC - HK-725a? Harkness La-40
1870's Mechanics and Agricultural Fair Association of Louisiana Silver Award Medal
Harkness LA-40. HK-725b 28.3 grams, 40 mm.
Unawarded, as are most of these medals, it is listed both as an Agricultural medal and a So-called Dollar (at least the bronze version, as the silver is unlisted).
This medal is highly sought after and is very scarce, as are most southern medals.
Grab it while you can!