Speedmaster Mark II Dial: Fungus or Water Damage?

Posts

257

Likes

370

DSotW

·Apr 21, 2026

Hello all,
I noticed when taking a magnifying glass to my "new" Mark ii Speedy that there seems to be some sort of damage to the dial between 1 and 3..

Has anyone experienced this before? Is it water damage, or maybe fungus, or the paint peeling ?

 

Posts

15,624

Likes

46,583

Canuck

·Apr 21, 2026

Problem, mung on the dial. Solution, replace the dial. Highly unlikely that the dial can be satisfactorily improved.

 

Posts

257

Likes

370

DSotW

·Apr 21, 2026

Canuck

Problem, mung on the dial. Solution, replace the dial. Highly unlikely that the dial can be satisfactorily improved.

Thanks, but what is "mung" ?

 

Posts

15,624

Likes

46,583

Canuck

·Apr 21, 2026

 

Posts

257

Likes

370

DSotW

·Apr 21, 2026

Ok, understood... I thought you were mentioning bean sprouts...

 

Posts

76

Likes

91

Mattsky

·Apr 21, 2026

In other words, it's 'oomskah'.

 

Posts

257

Likes

370

DSotW

·Apr 21, 2026

Mattsky

In other words, it's 'oomskah'.

ok, but what is the source? Could it be water infiltration at some point ?

 

Posts

15,624

Likes

46,583

Canuck

·Apr 21, 2026

A complete service, replace pushers, crown, gasket, possibly replace crystal, test water resistance of the case, etc. Oh, no sense trying to improve the dial. Just replace it!

 

Posts

142

Likes

297

iosist

·Apr 21, 2026

Almost certainly not a fungus or other microorganism, which would require some form of nutritive substrate on which to subsist.

 

Posts

257

Likes

370

DSotW

·Apr 21, 2026

Thanks guys... will do so.

 

Posts

15,624

Likes

46,583

Canuck

·Apr 21, 2026

DSotW

ok, but what is the source? Could it be water infiltration at some point ?

How might we know?

 

Posts

24,580

Likes

54,579

Dan S

·Apr 21, 2026

Fungus or water damage? Both ... and ...

Best advice, try not to look too hard.

 

Posts

3,990

Likes

6,833

Vercingetorix

·Apr 21, 2026·Spam Risk

I’m betting new dial if it bothers you. If you decide that is the route, may as well try cleaning first and see how that goes.

 

Posts

257

Likes

370

DSotW

·Apr 24, 2026

Canuck

How might we know?

Previous experience ?

 

Posts

65

Likes

58

alexei.joukovski

·Apr 26, 2026

Battery leak? hahaha
(I kid)

Gotta love when you buy bargain vintage watches though that "need a new battery"