Richard Mille, for all of its incredibly creative 15 years, is still quite a young brand. So it’s really no surprise that not too many of the brand’s watches appear at auction.

However, you might be surprised how high a price the few that do come up for auction actually hammer for.

Here is an overview of the top 10 performers at auctions in 2015.

Richard Mille RM 27-02 prototype worn by Rafael Nadal in match play; auctioned at Only Watch in November 2015

1. Richard Mille RM 27-02 for Only Watch
Date: November 7, 2015
Auction house: Phillips for Only Watch
Sold for: CHF 650,000

Hammering for a whopping 650,000 Swiss francs, the RM 27-02 prototype worn by Rafael Nadal during the 2015 French Open at Roland Garros not only became the highest-earning wristwatch for Richard Mille at auction in 2015, it also came in second place at the 2015 Only Watch auction only following the record-breaking Patek Philippe Reference 5016A-010.

This charity event has become sort of the rock star among auctions. While the watches offered in support of research of Duchenne Muscular Dystrophy are not secondary market offerings, they are unique one-off pieces donated by the manufacturers.

Richard Mille Tourbillon RM 27-02 Rafael Nadal Prototype for Only Watch 2015

For more information on what it’s like to attend this event, see You Are There: Attending The Only Watch Auction 2015 With Patek Philippe. For a complete listing of the watches sold at the 2015 edition of Only Watch, Only Watch 2015: Full List With Photos Of The Unique Piece Watches At Auction.

For a full description of this watch and what makes it so special see Richard Mille RM 27-02 For Rafael Nadal: The Quintessential Sports Tourbillon.

Quick Facts Tourbillon RM 27-02 Rafael Nadal
Case: 47.77 x 39.7 x 12.25 mm, NTPT carbon and TPT quartz, a material co-developed by Richard Mille and North Thin Ply Technology; bezel and case back assembled directly onto the NTPT base plate; water-resistant to 50 m; sapphire crystal on front
Movement: manually wound caliber with one-minute tourbillon weighing 3.35 g; 70 hours power reserve; certified to withstand 5,000 Gs
Functions: hours, minutes
Limitation: 50 pieces

Richard Mille RM 027 Rafael Nadal (photo courtesy www.sothebys.com)

2. RM 027 Rafael Nadal
Date: April 7, 2015
Auction house: Sotheby’s Hong Kong
Sold for: $505,680 / 3,930,000 HKD / CHF 484,326

The ultra-light tourbillon that Richard Mille made for tennis champion Rafael Nadal’s wrist borders nearly on the insane; to think that a tourbillon could be worn on the tennis court, in the sauna, and under every other duress that the sporting champion puts it through is nothing short of mind-boggling. No wonder these timepieces do well at auction.

This is number 27 of the 50-piece limited edition Richard Mille 027.

Quick Facts RM 027 Rafael Nadal
Case: 47.77 x 39.7 mm, carbon composite
Movement: manually wound caliber with one-minute tourbillon made of titanium and LITAL alloy (lithium, aluminum, copper, magnesium, zirconium)
Functions: hours, minutes
Limitation: 50 pieces

Richard Mille RM 59-01 Yohan Blake (photo courtesy www.sothebys.com)

3. RM 59-01 Yohan Blake
Date: June 11, 2015
Auction house: Sotheby’s New York
Sold for: $478,000 / CHF 444,899

This funky-colored timepiece is likewise an ultra-light model, this time with track-and-field ambassador Yohan Blake in mind. The example sold at this auction was number 44 of 50.

Quick Facts RM 59-01 Yohan Blake
Case: 50 x 43 x 16 mm, translucent composite of injected carbon nano tubes
Movement: manually wound titanium and anticordal caliber with one-minute tourbillon
Functions: hours, minutes
Limitation: 50 pieces

Richard Mille RM 52-01 (photo courtesy www.christies.com)

4. RM 52-01
Date: November 30, 2015
Auction house: Christie’s Hong Kong
Sold for: HKD 3,460,000 / $448,541

When the Skull Tourbillon, as it is affectionately known, was introduced at the SIHH in 2011, it made absolute waves. Never before had a brand so functionally introduced trendy skull design into an ultra-expensive wristwatch.

Quick Facts RM 52-01
Case: 42.7 x 50 x 15.95 mm, titanium, ceramic, carbon, and zirconium
Movement: manually wound titanium and pink gold caliber with one-minute tourbillon in skull-shaped bridges
Functions: hours, minutes
Limitation: 6 pieces in this configuration

Richard Mille RM 027 Rafael Nadal

5. RM 027 Rafael Nadal
Date: November 7, 2015
Auction house: Phillips Geneva
Sold for: $505,680 / 425,000 CHF

Continuing to underscore the popularity of the ultra-light timepieces Richard Mille has made for tennis champion Rafael Nadal, this is the second RM 027 on this list. This is number 31 of only 50 pieces of the ultra-lightweight tourbillon timepiece made to take on-court punishment.

Quick Facts RM 027 Rafael Nadal
Case: 47.77 x 39.7 mm, carbon composite
Movement: manually wound caliber with one-minute tourbillon made of titanium and LITAL alloy (lithium, aluminum, copper, magnesium, zirconium)
Functions: hours, minutes
Limitation: 50 pieces

Richard Mille RM 015 Perini Navi Cup (photo courtesy www.sothebys.com)

6. RM 015 Perini Navi Cup
Date: October 6, 2015
Auction house: Sotheby’s Hong Kong
Sold for: CHF 165,181 / HKD 1,312,500 / $169,352

The RM 015 was created in honor of the Perini Navi Cup, a regatta dedicated to only Perini yachts.

Quick Facts RM 015 Perini Navi Cup
Case: 48 x 39.3 x 13.84 mm, pink gold
Movement: manually wound caliber with one-minute tourbillon and fast rotating spring barrel
Functions: hours, minutes; power reserve indication, second time zone, function selector

Richard Mille RM 002

7. RM 002
Date: April 7, 2015
Auction house: Sotheby’s Hong Kong
Sold for: $161,250 / 1,250,000 HKD / 154,441 CHF

This very early Richard Mille timepiece is from about 2004.

Quick Facts RM 002
Case: 45 x 38.3 x 11.95 mm, titanium
Movement: manually wound caliber with one-minute tourbillon and fast rotating spring barrel and carbon nanofiber base plate and Arcap
Functions: hours, minutes; torque indication, power reserve indication, function selector

Richard Mille RM 003 (photo courtesy www.sothebys.com)

8. RM 003
Date: October 6, 2015
Auction house: Sotheby’s Hong Kong
Sold for: CHF 157,315 / HKD 1,250,000 / $161,288

This early Richard Mille timepiece inspired by the RM 002 is from about 2008.

Quick Facts RM 003
Case: 48 x 39.7 x 13.65 mm, titanium
Movement: manually wound caliber with one-minute tourbillon and fast rotating spring barrel and carbon nanofiber base plate
Functions: hours, minutes; second time zone, torque indication, power reserve indication, function selector

Richard Mille RM 014 Perini Navi in white gold (photo courtesy www.christies.com)

9. RM 014 Perini Navi
Date: November 9, 2015
Auction house: Christie’s Geneva
Sold for: CHF 131,000 / $131,174

Another Perini Navi model, proving the continuing popularity of these early limited editions fraught with visual cues of the yacht brand.

Quick Facts RM 014
Case: 45 x 38.9 x 11.85 mm, white gold
Movement: manually wound caliber with one-minute tourbillon and fast rotating spring barrel and carbon nanofiber base plate
Functions: hours, minutes; second time zone, torque indication, power reserve indication, function selector

Richard Mille RM 035 Rafael Nadal

10. RM 035 Rafael Nadal
Date: October 6, 2015
Auction house: Sotheby’s Hong Kong
Sold for: CHF 94,389 / HKD 750,000 / $96,773

This is the fourth edition made for Rafael Nadal in this line-up. Need we say more?

Quick Facts RM 035 Rafael Nadal
Case: 48 x 39.7 x 12.25 mm, magnesium aluminum alloy
Movement: manually wound caliber with one-minute tourbillon made of PVD-coated titanium
Functions: hours, minutes
Limitation: 50 pieces