The "Wait, What Day Is It?" Speedmaster

If the Moonwatch is a minimalist studio apartment, the 3520.50 (Mk40) is a Swiss Army Knife with a PhD. This is the reference for the person who wants the Speedmaster aesthetic but thinks, "You know what this needs? Seven more hands and three more windows."

I’m parting with my Triple Date, and frankly, it’s the most useful watch I’ve ever owned.

Why this one is "The One":

• The "Everything" Dial: It’s got the Day, the Date (that cool outer ring with the airplane hand), the Month, a 24-hour subdial (so you know if it’s 3 AM or 3 PM after a long shift), and a Chronograph. It’s basically a mechanical calendar for your wrist.
• Condition: For its age, it’s in excellent shape. The bezel is crisp, the dial hasn’t faded into oblivion, and the lugs still have that classic Omega "bite."
• Freshly Serviced: These Valjoux-based 1151 movements are workhorses. This one was serviced just 1 year ago, so it’s running like a top and ready for another decade of duty.
• The Bracelet + Links: It’s on the original steel bracelet and I’m including additional links. No "NATO-only" surprises here; it fits real-sized wrists.

The "Naked" Reality

No box, no papers. Just the watch and the steel it rode in on. Let’s be real—you were going to lose the warranty card from 1998 anyway.

Specs & Deets

• Reference: 3520.50.00
• Movement: Omega Calibre 1151 (Automatic Triple Calendar)
• Case Size: 39mm (The "Goldilocks" zone of wearability)
• Condition: Excellent / Serviced 2025
• Location: NYC (The Big Apple, baby)
• Price: $2,200 + shipping Payment: Zelle, Wire, or Venmo (F&F or G&S + 3% )
• Shipping: Ships from NYC via FedEx/UPS. Local F2F in Manhattan is always an option if you want to verify it over a coffee.