Watch Services

50 Years of Experience You Can Trust

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Over 50 years of watchmaking experience. The Watch Division of Market Street Diamonds is the most qualified, convenient, affordable and reliable source in the Mid-Atlantic Region for repairs, testing and warranty service for your fine Swiss timepiece..

We are more than pro watchmakers. We developed our own line of luxury military watches - lonzanowatch that we are very proud of. The watch line has been available for the enthusiasts since 2012.

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Member of American
Watchmakers
& Clockmakers Institute

Lonzano Watch collection available in store

Time Products Sold New, Previously Enjoyed and Vintage Collector’s Pieces

Master watchmaker with a specialized focus on watch servicing and repairs

Diagnostic Examination

Assessment, Cleaning & Servicing

Watch Case Disassembly & Polishing

Timekeeping & Calibration

Pressure Testing & Waterproofing

Quality Control

Expert Appraisals

“50 years of watchmaking &
clockmaking
experience that you can trust!”

“50 years of watchmaking & clockmaking
experience that you can trust!”

Read what our clients say about us

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Inspired by vintage combat aviation designs, and built with high-end swiss movement, the Lonzano Watch is the choice of exceptional men who cherish the spirit of adventure

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Made in DC!

#MadeInDC

Made in USA

#US Made

Red Carpet Customer Service

Red Carpet Customer Care

Eco-Conscious Enterprice

Eco-Conscious Enterprise

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MSD Turns 114 years old! Pardon our dust; we are currently remodeling the showroom and operating by appointment only.