The watch is in good unpolished condition for its age. The dial and crystal are clean. Surface scratches (mostly on bracelet) which can be polished off however not recommended. No major dings or dents. - L serial - year 1989. - Rare “inverted 6” dial with arabic numerals and black subdials. - In stock, ready to ship. Key Aspects of the Inverted 6 Daytona: The "Error" 6: The numeral 6 in the sub-dial at the bottom (12-hour counter) is upside down, resembling a '9'. Production Era: These dials were produced by Singer for early 16523 models between 1988 and early 1993, specifically in the R, L, E, N, X, C, and S serial series. Zenith Movement: These watches contain the caliber 4030, a modified version of the high-beat Zenith El Primero movement, which was Rolex's first automatic chronograph movement. Collectibility: The inverted 6 is highly sought after by collectors, commanding a premium price over later versions of the same reference that corrected this to a right-side-up 6. Design Traits: Beyond the dial, these early models often feature a "floating" Cosmograph font, tritium lume (T-Swiss), and a brushed steel finish on the case and bracelet.