I found this lovely jeweller's saw at a thrift store. German-made, it was still in its original packaging:
Original price tag: it retailed for $22.98 back in the day.
Lacy & Company was founded in 1927. The parent company, Lacy West Supplies, is now out of Vancouver and, according to its website, "Serving the Jewelry Manufacturer, Goldsmiths, Silversmiths, Opticians, Dental Lab Technicians, Musical Instrument Repairers and many other Allied Trades for decades." In 2015, the Toronto warehouse was shut down. I guess there weren't enough specialists left in Toronto to make a go of it.
The parent company still carries unusual tools like dapping sets. "Dapping" means to curve metal into a hemispherical form. See how to dap and dome.