VINTAGE FABER CASTELL 1/87A SLIDE RULE IN THE ORIGINAL CASE GERMANY 1930's

Rare vintage slide rule by A.W. Faber-Castell, model 1/87A, made in Germany, likely during the 1930s–1940s. This model features an integrated Addiator for manual addition and subtraction, built directly into the body of the rule. Manufacturer: A.W. Faber-Castell (Germany).
 Model: 1/87A – Castell Addiator. 
 System: Rietz. 
 Length: Approx. 12 inches / 30 cm.

Material: Wood with celluloid scales. Patent marking: D.R.P. (Deutsches Reichspatent).  Includes: Original sliding cursor and green hard case with model number printed on the side.
  Condition: The slide rule is in overall good vintage condition. The case shows visible wear, and there is a cracks at one end of the rule body (see photos). The rule remains structurally sound and usable for display or collection. Please review all photos carefully.

Winning bidder pays $25.00 Postage international express air mail 
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