Korona K1 Prototype | 44mm

No. 0:000

Regular price £12,000 GBP USD EUR Enquire

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Korona K1 Prototype | 44mm

No. 0:000

Regular price £12,000 GBP USD EUR Enquire
As the son of jewellery designer Pentti Sarpaneva, and nephew of the internationally acclaimed designer and artist Timo Sarpaneva, it was always the case that Stepan’s career would take a creative direction. Educated at the Finnish School of Watchmaking and then WOSTEP, Sarpaneva (the brand) was formed in Helsinki, Finland, in 2003. Inspired by his time at manufactures including Piaget, Parmigiani, Vianney Halter and Christophe Claret, Stepan demonstrates his passion for the craft in each watch to come out of the workshop.


"This 44 mm DLC K1 was my very first DLC-coated test piece, from 2008 and an important study of the look and feel. Prototypes had to be made from the real stuff!”


The Korona K1 has undergone several iterations throughout its lifetime, with this the very first DLC-coated stainless steel prototype (Case No. 0:000) a pre-cursor to the original, launched in 2008. A study of both the look and feel of DLC treatment to the 44mm, stainless steel case, this watch introduced a more traditional look to the Sarpaneva brand. Taking the ‘scalloped’ design of Stepan’s original ‘Time Tramp’, the K1 applied this design to the bezel whilst maintaining a more traditional case design. The case is also thinner than later pieces, at 9.6mm, helping the watch to sit closely against the wrist.

This prototype K1 carries a multi-toned dial in various shades of black, later offered to clients as an option for production pieces. The lower region of the dial is made up of two levels; one frosted, the other brushed and skeletonised in Sarpaneva’s concentric-circle style. Above this, sits a darker, open-worked disc on the outer edge, representing the hour markers and matching the DLC-treated colour of the case. The hour and minute hands of this prototype use an 'oversized', arrow shaped design - highly-polished and matching the open-worked aesthetic of the dial. Completing the dial is Sarpaneva’s logo at 9 o’clock, on the anti-reflection treated sapphire crystal.

Sarpaneva favours the use of Soprod’s self-winding A10 in his watches, extensively modified to suit his requirements for each piece, beating at a rate of 28,800 A/h. In this variant of the K1, the mainplate was modified to use a larger date-disc, openworked and made from stainless steel. Also skeletonised is the winding-rotor, executed in a similar style to the dial, letting you catch sight of the calibre whilst carrying two frosted white-gold masses. The movement is rhodium-plated and carries perlage-finishing throughout, with a power-reserve of 42 hours.

This K1 Prototype is in excellent condition, accompanied by its original box and certificate of authenticity. It comes fitted with an original, Sarpaneva black alligator strap and corresponding DLC-coated buckle.

Viewings can be arranged in Central London by appointment.
Brand: Sarpaneva
Model: Korona K1 Prototype No. 0:000
Movement: mechanical automatic Cal. modified Soprod A10
Functions: Hours, Minutes, Date
Features: Display back, Skeletonised dial
Case: 44 mm DLC-coated steel
Crystal: Sapphire Front and Back
Bracelet: Black Alligator Strap
Lug: 22mm
Box & papers: Original box and certificate of authenticity
This prototype Sarpaneva Korona K1 (No 0:000) watch in DLC-coated steel is in excellent condition and has perfect mechanical functionality. It is guaranteed for authenticity, and comes with a two-year warranty from A Collected Man.

All of our pre-owned watches have undergone thorough mechanical inspections, including being ultrasonically cleaned, serviced and resealed if appropriate and tested for at least four days, to ensure they meet our highest timekeeping standards. Our pre-owned and vintage watches, unless stated otherwise, are covered by a full or a limited twenty-four month warranty. For example, due to their age, some vintage watches should not be subjected to the same conditions as when they were new. Please see our Terms & Conditions for further information. 

All of our new watches are covered by the warranty from the original manufacturer. Please contact us for further information.

We offer worldwide delivery on all of our watches.

If ordering from the UK or Europe before 1 PM, your watch will be sent the same working day. The courier will depend on the value of the watch, with all watches delivered the next working day.

If ordering from outside Europe, delivery will depend on choice of courier and destination. 

You can cancel your order without giving any reason, within 14 days from the day the watch has been delivered to you.

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