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Mentor Goltz & Breutmann Mentor Reflex

The Mentor Reflex is a German single-lens reflex plate camera produced by Goltz & Breutmann of Dresden in the early twentieth century. It was aimed at professional and advanced-amateur users of its era, with reflex viewing through a waist-level hood and a focal-plane shutter typical of large-format SLRs of the period.

At UK auction, hammer prices logged for the Mentor Reflex have run from £80 to £690, with the middle of the recorded range sitting near £350 — though every logged sale is more than twenty years old, so what the camera is worth in today's 2026 market is harder to pin down than the raw figures suggest. Condition of the shutter curtains, completeness of plate holders, and the state of the leather covering have historically driven the wide spread in what examples sell for at saleroom level.

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Sales History

Prices shown are UK auction hammer results — the wholesale level achieved in the saleroom. Neither buyer’s nor seller’s commission is included. Dealer and retail asking prices are typically higher.

Prices updated: May 2005

Date Price Source
May 2005 EUR 400 Leitz Auction
Nov 2002 EUR 300 Leitz Auction
May 1999 £690 Christie's
Oct 1998 £80 Christie's

Frequently asked questions

What is a Mentor Reflex worth at UK auction?

Recorded hammer prices have ranged from roughly £80 to £690, with a median near £350, but the logged sales are all from 1998–2005 so the current value of a clean example is not well-calibrated by recent data.

How much does a Mentor Reflex sell for in good condition?

The best-condition examples in the logged history reached the upper end of the range at around £690, while rougher bodies with shutter or leather issues have sold for under £100.

What drives the price of a Mentor Reflex?

Working shutter curtains, a clear reflex mirror, original leather, and the presence of matched plate holders and a usable lens are the main factors that push price toward the top of the range.

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