CHOPTANK

Edition & Provenance

• Reference — E250-S
• Edition — First Edition, silver dial; limited production
• Status — Retired — production complete; no longer offered for sale
• Serial number — Engraved on the caseback
• Watchmakers — Complication set mastered by Hartwig Balke; regulated and decorated by Towson watchmakers in Maryland
• Warranty — Two years from original purchase, covering service and repair
• Service — Service and repair for every Towson watch, including retired references, through Baltimore Watch Company, Baltimore, MD

Movement

• Caliber — Swiss Valjoux 7751 automatic chronograph · 25 jewels · about 46-hour reserve
• Functions — Chronograph: central sweep seconds, minute counter at 12, hour counter at 6 · full calendar: day and month windows at 12, date by central moon-crescent hand · moonphase in the sub-dial at 6 · 24-hour sub-dial at 9 with running seconds · date-reset pusher on the left of the case
• Regulation — Chronometer-grade, ±5 seconds per day; Adjusted to five positions in Maryland; Nivarox hairspring, Glucydur balance, Incabloc shock protection
• Decoration — Rhodium plating, Geneva stripes, perlage base plate, heat-blued screws, engraved gold-plated rotor

Case

• Material and size — Stainless steel tonneau · 40 × 44 mm · 13.5 mm thick · 20 mm lugs
• Finish — Satin-finished mid-section and lugs; mirror-finish bezel
• Crystal — Domed sapphire with anti-reflective coating; sapphire exhibition back with screw-down frame engraved with owner and brand information
• Crown and pushers — Gripped push-pull crown, three positions, quick-adjust date and moonphase; free-standing oval high-polish chronograph pushers; date-reset pusher on the left
• Water resistance — 50 m (5 ATM)
• Made in — Assembled, regulated and decorated in Maryland

Dial & Hands

• Dial — Hand-made silver guilloché dial; black and blue text; blue dotted minute track; red, white and blue TWC shield; three engine-turned sub-dials with rhodium dividers
• Markers — Applied rhodium-plated diamond markers
• Hands — Rose-gold spade hands; red moon-crescent date hand; central chronograph seconds with cathedral tip

Strap

• Offered on — Cuoio Brown Nappa, Brown daVinci, Smooth Brown or Nero White Nappa leather · 20 mm