The Ihagee Zweiverschluss Duplex (1020, 9x12) is a plate camera made by the Dresden manufacturer Ihagee, designed for 9x12 cm plates. The "Zweiverschluss" (twin-shutter) designation refers to the dual shutter arrangement that distinguishes this model within Ihagee's early plate-camera range.

Sales data for this model is extremely limited: a single UK auction hammer result of £320 from 2008 is the only reference point available, and that wholesale saleroom price gives only a rough indication of what one might sell for today. With no recent comparables, the current value of an Ihagee Zweiverschluss Duplex is best treated as indicative rather than a reliable market price in 2026.