Leitz (Leica) ISBOO 14098 9cm (90mm) LTM-to-M mount adapter ring

Original Leica lens adapter ring manufactured by Ernst Leitz GmbH in Wetzlar, Germany. Features precision metal construction with engraved markings including 9cm designation and DBP patent reference. It is a factory-original accessory made by Ernst Leitz GmbH Wetzlar, Germany (post-war “DBP” marking = Deutsches Bundespatent). The exact purpose of this ring is to allow any Leica screw-mount (LTM / M39) 90mm / 9cm lens (such as the common Elmar 9cm f/4) to be mounted on a Leica M-series camera body (M3, M2, M4, M5, M6, etc.).

Technical Specifications:

• Brand: Ernst Leitz GmbH
• Model: 9cm adapter ring
• Origin: Wetzlar, Germany
• Material: Metal alloy

Condition Report:

Very Good condition. Visible light surface scratches from normal use. All engravings clear and legible. No dents, cracks, or missing components. Red alignment mark intact.