Canadian Jewellers Association · Toronto : Maclean-Hunter Pub. Co · leaf 101
requiring a cleaning, but chro-nometers should never be let go morethan three years; watches require to becleaned every eighteen months at longest. Brass oxidizes more or less in contactwith oil this will even eat into it, and it as-sumes a clear green, and at times a blackcolor. If these symptoms… … (ST. JAMES PATTERN.) Simpson, Hall, Miller & Co., Manufacturers of SILVER PLATED WARE
Jewelry · Jewelry trade
Internet Archive · Thomas Fisher Rare Book Library · Public Domain Mark 1.0. Free to use for anything.
