[rotorwrench]

Alchemy Mirror Resilvering is one of the few companies that still offers mangin mirror restoration for the early model T gas lamps. The electrics lights that Ford used beginning in 1915 don't use glass mirror reflectors. There were several manufacturers of the gas lamps used from the beginning by Ford. This would go back to the original 1903 model A up through the B, N, S, and K models that predate the model T debuting in 1908 although lighting was still kind of an optional thing in the very early years. The real early lamps may have only been kerosene fueled types on some cars.

Different manufacturers of gas lamps used different sizes and parabolic shapes in their different designs. The mirror has to be relatively close to the burner to get a good focus of the light beam. Glass mirrors could take the abuse better than metal but sometimes the non-plated frontal surface gets damaged over time and is difficult to polish out. Due to broken, cracked, or damaged surfaces, these reflectors are quite expensive now and resilvering them is also expensive. A lot of folks just put halogen lamps in with the plated brass reflectors so they can use the lamps without worry of deterioration. There used to be a small shop that reproduced some mangin mirrors but I don't think they're around anymore.