1543, 1544, 1546, 1553 and 1556 Telephones, 1543 Bridged and Divided Ringing

1543, 1544, 1546, 1553 and 1556 Telephones, Schematic Drawing for 1543

1543, 1544, 1546, 1553 and 1556 Telephones, Schematic Drawing for 1543W Bridged and Divided Ringing

1543, 1544, 1546, 1553 and 1556 Telephones, Schematic Drawing for Standard 1544 Telephone Scan provided by Paul Fassbender.

1543, 1544, 1546, 1553 and 1556 Telephones,1553W Wall Telephone (Page 1) Scan provided by Paul Fassbender.

Image contributed by Doug Duffy.

1600 Petite Style, 1602WT Petite with model 95 tone ringer. Scan provided by Paul Fassbender.

1800 and 2800 Three Line, 2800-3B3. Scan provided by Mike Neale.

950-BY Weatherproof Telephone, 950-BY, Don't drop this one on your foot!