'Amagnetic', 1970, no.734.822, ref.3417; a fine and rare stainless steel anti-magnetic wristwatch with original certificate
- diameter 35mm
The accompanying Extract from the Patek Philippe Archives confirms that this wristwatch was manufactured in 1970 and sold on 23rd July the same year. The Certificate of Origin also notes the date of sale.
Production of reference 3417 began in 1970. The present watch features a rare dial configuration for this model. More usually found bearing an 'Amagnetic' signature on the dial, the standard model also features long baton minute markers and longer numerals. This wristwatch may well have been a special order, requested by a client who required an anti-magnetic wristwatch but preferred a classic dial design without the addition of the 'Amagnetic' signature.
Patek Philippe introduced reference 3417 in 1958 and used anti-magnetic calibre movements 12-400AM and 27-AM400. Before 1958, the effects of magnetism on the accurate running of watch movements was well known and, since the 1930s, wristwatch makers had been devising methods to curb its effects. In this model, Patek Philippe used a gold lever escapement and an iron movement cover to help protect the watch movement from magnetic forces.
For examples of Patek Philippe wristwatches bearing 'Amagnetic' on their dials, see Huber, M., Banbery, A., Patek Philippe Wristwatches, Second Edition, pp.194-195, pls.311-313.