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Our Credentials

Updated: Jul 5


Our Certifications from AWCI and WOSTEP

Here at House of Time, LLC, we have two certified watchmakers working on premises: myself (Michal Blaszczyk) and Christopher Grygny. I hold two certifications from two independent entities - AWCI’s CW21 and WOSTEP. Christopher is certified from AWCI, but holds the higher CMW21.


We strictly adhere to the highest of industry standards as shown here. Unfortunately, most manufactures do not have such public examples of what is professional watchmaking; as such, I am thankful that AWCI took the time to compile a list of basic expectations.


You may find yourself asking, “So what? What do the certifications mean?” Great question! Does a certification mean that a watchmaker will always produce flawless work? No, it is not a guarantee that you will get the best industry work; however, it reduces the change that you will become the victim of this type of work.

As in many other professions, be they doctor, lawyer, or mechanic, watchmakers should constantly re-invest into their education to make sure our knowledge, practices, and procedures stay current. This way, the client always gets the best service.


Below is a mostly complete list of brand-sponsored and general trainings that Christopher and I have completed, starting from most recent and in the following format:


Training name – Location – Dates Attended – Watchmaker’s Name


(35) Omega Watchmaker Evaluation 1120 – Secaucus, NJ – Scheduled for 2020 – Michal Blaszczyk

(34) IWC Polishing (plus IWC Polishing Trainer Training) – Schaffhausen, Switzerland – December 5 to December 9, 2016 – Michal Blaszczyk

(33) WOSTEP Different techniques related to polishing – Neuchatel, Switzerland – November 14 to December 2, 2016 – Michal Blaszczyk

(32) IWC Level 30 (plus IWC Trainer Training) – Schaffhausen, Switzerland – September 19 to September 30, 2016 – Michal Blaszczyk

(31) Montblanc Level 30 (plus Montblanc Trainer Training) – Villaret, Switzerland – September 12 to September 16, 2016 – Michal Blaszczyk

(30) Baume et Mercier Level 30 (plus B&M Trainer Training) – Les Brenet, Switzerland – September 5 to September 9, 2016 – Michal Blaszczyk

(29) Cartier Polishing (plus Cartier Polishing Trainer Training) – La Chaux de Fonds, Switzerland – August 22 to September 9, 2016 – Michal Blaszczyk

(28) Cartier Level 30 (plus Cartier Trainer Training) – La Chaux de Fonds, Switzerland – August 8 to August 19, 2016 – Michal Blaszczyk

(27) Omega Watchmaker Evaluation 1120 – Secaucus, NJ – June 27 to June 30, 2016 – Christopher Grygny

(26) WOSTEP Train the Trainers – Neuchatel, Switzerland – October 26 to October 30, 2015 – Michal Blaszczyk

(25) Montblanc Rieussec Repair – Fort Worth, TX – June 1 to June 11, 2015 – Michal Blaszczyk

(24) Advanced 21 Rolex, New Case Design – Harrison, OH – January 6 to January 8, 2014 – Michal Blaszczyk

(23) Officine Panerai Basic & Manifattura – Fort Worth, TX – September 30 to October 4, 2013 – Michal Blaszczyk

(22) Advanced 21 (R3035) – Harrison, OH – March 19 to March 23, 2012 – Michal Blaszczyk

(21) Polishing and Refinishing – Harrison, OH – March 5 to March 9, 2012 – Michal Blaszczyk

(20) Polishing and Refinishing – Harrison, OH – March 5 to March 9, 2012 – Vernine Blaszczyk

(19) Swatch Group U.S. Service Provider Training – Secaucus, NJ – November 15 to November 19, 2010 – Christopher Grygny

(18) AWCI CW21 Certification – Harrison, OH – Awarded August 1, 2010 – Michal Blaszczyk

(17) WOSTEP Refresher Course Diploma – Neuchatel, Switzerland – January 11 to May 28, 2010 – Michal Blaszczyk

(16) AWCI CMW21 Certification – Harrison, OH – Awarded June 7, 2009 – Christopher Grygny

(15) Special High-Grade Automatic – Tampa, FL – October 29 to October 31, 2009 – Christopher Grygny

(14) Basic Quartz Watch and Quartz Chronograph Repair – Harrison, OH – October 5 to October 9, 2009 – Christopher Grygny

(13) Balance Staffing and Timing – Tampa, FL – August 31 to September 4, 2009 – Christopher Grygny

(12) Timing of Precision Timepieces (Rolex Sponsored Course) – Tampa, FL – August 24 to August 26, 2009 – Michal Blaszczyk

(11) Balance Staffing and Timing – Tampa, FL – August 14 to August 15, 2009 – Christopher Grygny

(10) Lathe 1 – Harrison, OH – January 5 to January 9, 2009 – Michal Blaszczyk

(9) Servicing and Adjusting the Lever Escapement (Rolex Sponsored Course) – Harrison, OH – May 18 to May 20, 2009 – Michal Blaszczyk

(8) Omega Automatic Chronographs (Omega Factory Training) – Secaucus, NJ – March 23 to April 3, 2009 – Michal Blaszczyk

(7) Modern Mechanical Chronographs Servicing and Adjusting – Harrison, OH – November 3 to November 7, 2008 – Michal Blaszczyk

(6) Service Provider and Co-Axial Training (Omega Factory Training) – Secaucus, NJ – October 27 to October 31, 2008 – Michal Blaszczyk

(5) ETA 7750 Chronograph – Tampa, FL – October 24 to October 25, 2008 – Christopher Grygny

(4) Basic Quartz Watch and Quartz Chronograph Repair – Harrison, OH – October 6 to October 10, 2008 – Michal Blaszczyk

(3) Basic Watch Repair – Harrison, OH – July 14 to July 18, 2008 – Michal Blaszczyk

(2) Bulova Accutron Training Program – Awarded June, 1975 – Christopher Grygny

(1) Watchmaker Registration – La Crosse, WI – Awarded July 25, 1973 – Christopher Grygny

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