Nice, that's quite ornate? Though I guess mandolin's are generally..
is probably your best bet for more info on mando's (if you havn't already found the site). Saw they have some Il Globo's owners there.
Locally I'm not sure who the mandolin specialist is, if you need a valuation for insurance (E.g. something official looking on a letterhead), Ronnies in Jhb or The Gear Junkie (Cpt) would be able to help.