Siam Mongkol
Watch owner happy with service

Owners who have visited the workshop

What people find when they bring a watch to us.

These are honest accounts from owners who have used our services — written in their own words, covering what went well and what the experience was like.

← Back to Home

16+

Years in practice

900+

Watches serviced

4.9

Average owner rating

3

Professional recognitions

In their own words

Client experiences


SP

Somchai Phromphak

Bangkok, Thailand

"I brought in a Seiko 5 that my father gave me — it had not been serviced in twenty years and was losing about ten minutes a day. The assessment was clear and unhurried, and Khun Wichai explained exactly what the movement needed. When I collected it three weeks later the timing machine printout showed it was running within two seconds a day. That was more than I expected."

May 2025 · Standard Mechanical Service

NL

Nattapon Limcharoen

Pathum Thani, Thailand

"The crystal on a vintage Omega had cracked and I was nervous about finding the right replacement without someone guessing. Siam Mongkol found a correct-profile mineral crystal, confirmed it with me before ordering, and fitted it without touching the case finish — which I specifically wanted left alone. Small detail, but it mattered to me and they remembered."

April 2025 · Crystal Replacement

RK

Ratana Kositchai

Chiang Mai, Thailand

"I travel to Bangkok a few times a year and brought a 1950s Swiss pocket watch for assessment. The turnaround was longer than I initially hoped — six weeks — but the workshop contacted me midway to explain why and what they had found. The watch came back running consistently, and the dial was preserved exactly as I had asked. Worth the patience."

March 2025 · Antique Restoration

PW

Prasong Worachat

Nonthaburi, Thailand

"I had been avoiding getting my daily automatic serviced because I was not confident about finding the right place. The written report after the assessment answered every question I had been carrying around. Clear, specific, and without any pressure to agree to work I had not asked about. The watch returned in noticeably better condition. I will bring two more in before the year is out."

May 2025 · Standard Mechanical Service

AB

Andrew Blackwell

Expat, Bangkok

"As someone who arrived in Bangkok without knowing any watchmakers, I was cautious. The workshop came recommended by a collector I trust, and the experience matched what he described: quiet, no pressure, and very knowledgeable. My vintage Longines needed a part that could not be sourced — they offered to fabricate it and explained the process. Result was exactly right."

April 2025 · Antique Restoration

WT

Wilai Thaweesak

Bangkok, Thailand

"I brought in an old watch from a relative abroad for polishing and crystal replacement. They were careful to ask what degree of polish I wanted, and I appreciated that they explained the difference between a full re-polish and a light buff — I had not realised that mattered. Took two and a half weeks. Came back looking much more presentable without losing its original character."

May 2025 · Crystal Replacement & Polishing

Detailed case studies

A few projects in more detail


1952 Swiss cylinder pocket watch — antique restoration

The situation

A collector acquired a Swiss pocket watch from a Thai antique market. The movement was not running; the cylinder escapement was found to have a damaged pallet, the mainspring was broken, and there was mild corrosion on several wheels. The dial was original and intact, which the owner wanted preserved exactly.

What was done

After a full assessment and written proposal, work proceeded in stages. The broken mainspring and damaged pallet were hand-fabricated — no original replacements existed for this reference. Corrosion was treated chemically rather than mechanically to avoid surface loss. The dial was cleaned using archival conservation methods and refitted without damage.

The outcome

The movement returned to operation after eight weeks, running within five seconds per day — reasonable for a cylinder escapement of this age. The original dial, signed by its maker, was fully legible. The owner later noted it was the only piece in their collection where they could confidently say every part was either original or properly period-appropriate.

"I was prepared for this to take a long time and it did — but the process was explained at every stage, and the result was exactly what I had hoped for when I first brought it in."

1970s automatic — service after 30 years in a drawer

The situation

An owner inherited an automatic watch that had not been worn or wound in approximately thirty years. The movement turned over but ran erratically. Old lubricants had dried and gummed several pivot points; the calendar mechanism was not engaging correctly. The case showed heavy surface oxidation on the bracelet clasp.

What was done

Full movement service with particular attention to the dried lubricants. The calendar mechanism required cleaning and minor adjustment to the jumper spring, which had slightly deformed. The bracelet clasp was treated separately and polished. The crystal had fine scratches; a replacement was fitted after the owner confirmed the preference.

The outcome

The watch was returned running within three seconds per day across six measured positions. The calendar engaged cleanly. Total turnaround was three weeks, slightly longer than standard due to the calendar work. The owner noted it was the first time the watch had been worn since childhood — they described collecting it as unexpectedly moving.

"Seeing the timing sheet was strange — somehow it made the watch feel real again in a way that just winding it hadn't."

Find us

Contact & Workshop Details


Address

73 Ratchadamri Road
Lumphini, Bangkok 10330

Hours

Mon–Fri 10–18
Sat 10–15

Professional standing

Affiliations & recognitions


Thai Horological Association

Member since 2011

Bangkok Collector Network

Recommended workshop, 2022 & 2023

Swiss Techniques Training

Guild associate member, 2017

Have a watch you'd like to discuss?

There is no obligation in reaching out. Tell us about the piece and we'll share our honest thoughts.

Send an Enquiry