@DanielB Here is a link to this kind of bridges, http://www.mandolinluthier.com.....dges.htm  if you prowl around this Luthier Dave's site you will find a lot about mandolins, their bridges etc.  Better here is a link to his home page where he is extremely candid and forthcoming about mandolin luthiery. http://www.mandolinluthier.com/index.htm

Thanks to KS, Uzi, Tucs, CPO, DanielB, RosinGeeko, and Pierre for looking in. The only date I have for the builder Francesco Salamone  is 1890 in a EBay Ad so I am not swallowing it yet. Early 20th century seems right so it might technically be an antique. The seller a new university grad said it was his father's so the provinence is not extensive. Dave the Mandolinluthier says Salamone was not a premier builder but the instrument looks like it was a premium item from that shop. It is a premium item for me.

I bought some new brass pan-head screws. Where screws are used they are actually counter sink screws and in all cases they hold down either metal tuner covers or metal tail pieces which were never countersunk. These new screws after blackening in a vinegar atmosphere for a day or so, wont stand so proud nor offer a place to snag cloth or skin. Also bought some clamp tape designed to keep clamping pressure on irregular shaped items like mandolins until glue has dried. New ultra light strings are on order. These mandolins may have bridged the change from gut to steel strings but they don't handle the tensions of ordinary modern strings.

Will take some detailed closeup pictures of the individual challenges I will be working on and thanks again for checking in.

OctaveRay