Speedmaster Automatic 3523 service test results

G4_Chrono · Apr 1, 2021

Hello

I am looking at buying a Speedmaster 3523 'Day Date' that has just been serviced. The attached photo is of the service test results.

Whilst some of the numbers look to be ok, I am not familiar with all the data. - Does this look to be in spec and evident of a properly serviced chronograph?

Thanks in advance.

Archer · Apr 1, 2021

Was the watch fully wound?

Chronograph was off?

I ask because the balance amplitudes are lower than what I would expect in a freshly serviced watch...

G4_Chrono · Apr 2, 2021

Hi Archer.

Thanks for your input. I shall ask about that. Although within 30' of each other, the numbers are a bit low.

I wasn't sure how to read the right hand side of the print out - 'D, X, Xv' etc.?

Archer · Apr 2, 2021

D - Delta - difference between fastest and slowest reading
X - average rate
Xv - average of vertical readings
Xh - average of horizontal readings
Dvh - Delta between horizontal and vertical readings
Dv - Delta of vertical readings only

G4_Chrono · Apr 4, 2021

Archer
D - Delta - difference between fastest and slowest reading
X - average rate
Xv - average of vertical readings
Xh - average of horizontal readings
Dvh - Delta between horizontal and vertical readings
Dv - Delta of vertical readings only

Really appreciate this information Archer, Thanks.

I have asked more questions of the seller but he has gone quiet on me . .

Speedmaster Automatic 3523 service test results

G4_Chrono

Archer

G4_Chrono

Archer

G4_Chrono

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