9 / 10
This Eberhard Scientigraf reference 11538 is an incredibly well preserved example of the early 1960s.
All its parts are conform and it is in excellent condition. The case, dial, hands, bezel and crown are really nice, with only some marks on the caseback.
It is a very early series with no lume on the dial nor on the hands.
This model is extraordinarily rare, but it is even more incredible to find one in this spectacular condition.
For these reasons, it represents a unique opportunity for any watch collector.
About the model
The 1950s and 1960s brought about amazing advances in science and technology, and scientists of this era striated to work with computers, nuclear energy, and space exploration, generating new concerns about their watches.
Launched in the early 1960s, the Scientigraf was a real competitor to the Rolex Milgauss, the IWC Ingenieur, and the Omega Railmaster, because of its anti-magnetic properties. But it is actually much rarer.
Its antimagnetic resistance was stated by Eberhard as 900-1000 gauss (as engraved on the caseback). The Scientigraf gets this anti-magnetic quality from its case construction. It uses a soft iron structure inside the case called a Faraday cage. It is so simple and effective that the same technology is still used today to protect watches from magnetic fields.
The automatic movement is the Caliber 11500 which uses 17 jewels.
The most noticeable feature of the Scientigraf is its distinctive dial, with larger triangles pointing outwards at 12-3-6-9 and smaller triangles pointing inwards at the remaining hours.
The handset on the Scientigraf is also distinctive. The large hour hand is a cross between a broad arrow in shape and cathedral in structure, and the seconds hand is a lollipop.