Vintage ADT Fire Department Porcelain Sign opaline which he lost

which he lost

or "the Claudian water"

Features the company's logo and sans serif typeface in red and blue graphics

Similarly to the AAA of today

Vintage ADT Fire Department Porcelain Sign opaline which he lostc. 1960s; The ADT (American District Telegraph) Corp. Baltimore, MD Vintage porcelain emergency and vanity sign. This item would be next to sprinkler systems on walls in businesses that hired ADT Protection Services. In the 1960s, ADT had a monopolization (in restraint of trade) on the market and almost 80% of central station alarms were provided by the company. It exhibits small patches of oxidation, but is overall in good cosmetic condition,