The Rolex Cosmograph Daytona reference 116523 (M-Series, 2010) featuring an 18k yellow gold and steel case with a champagne dial is a highly desirable luxury timepiece that beautifully represents the latter era of this discontinued line. This specific configuration is highly sought after by collectors due to the transitional details specific to its era.

The features listed in your configuration pinpoint a precise evolutionary stage of the reference 116523 before it was permanently discontinued in 2016. 

• The "RRR" Rehaut: This denotes the engraved inner bezel ring featuring the repetitive text "ROLEX ROLEX ROLEX" along with the watch's unique serial number at the 6 o'clock position. This engraving was rolled out gradually starting in 2006–2007 (Z-Series), meaning an M-Series watch features this crucial anti-counterfeiting and stylistic update. 

• The Parachrom Hairspring: Because it was finalized after 2005, the Caliber 4130 inside this M-Series watch is equipped with the upgraded blue Parachrom hairspring. This provides vastly superior resistance to temperature variations and magnetic fields compared to the earlier versions. 

• Broader Hands: Unlike the thinner, fine watch hands seen on the early 2000s variants of the 116523, the later M-Series variants utilize broader, more readable hands.

• Reference Number: 116523.

• Serial Series: M-Series (which officially began production in late 2007/2008, with the watch sold or finalized around 2010).

• Case Size: 40mm diameter.

• Materials: Rolesor (a signature combination of 904L Oystersteel and 18k yellow gold).

• Bezel: Fixed 18k yellow gold bezel engraved with a tachymetric scale.

• Dial: Champagne finish with contrasting sub-dials and luminous indices or hands.

• Movement: In-house Rolex Caliber 4130 automatic, self-winding chronograph with a column wheel and vertical clutch.

• Power Reserve: Approximately 72 hours.