Chronograph (vintage)

Tudor Chronograph 9430

Oysterdate 'Big Block' Chronograph

40mm
Steel
Automatic
1976 to 1980

The Tudor Chronograph (vintage), reference 9430. Produced 1976 to 1980. Below are the full specifications, plus what each part of the reference number means. If you own this reference and want to know what it is worth today, we buy it outright and appraisals are complimentary.

Inquire Tell us what you are looking for Sell us yours Complimentary appraisal Inquire about this reference Any year, dial or bracelet · we will hunt it

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GIA-trained appraisers · 20 years in downtown San Diego · 100% certified authentic

Full specifications

Case

Case size	40mm
Case material	Steel
Lug width	20mm
Crystal	Acrylic

Bezel

Bezel type	Tachymeter

Dial

Dial color	Black
Lume	Tritium

Band

Bracelet type	Oyster
Bracelet	Oyster bracelet with folding clasp
Clasp	Folding

Movement

Movement	Automatic, Valjoux 7750
Caliber	7750
Beat rate	28800 vph
Functions	Chronograph, date

Reference

Produced	1976 to 1980

How the 9430 compares

Side by side with the other Tudor Chronograph references we document. Only the specs that actually differ are listed.

9430 vs 7031

Spec	9430	7031
Dial	Black	Grey and orange
Produced	1976 to 1980	1970 to 1971

9430 vs 7032

Spec	9430	7032
Dial	Black	Grey and orange
Produced	1976 to 1980	1970 to 1971

9430 vs 7149

Spec	9430	7149
Dial	Black	Blue and grey
Produced	1976 to 1980	1971 to 1977

More Tudor Chronograph references

Chronograph

7031

Chronograph

7032

Chronograph

7149

Chronograph

7159

See all Tudor Chronograph references ›

Common questions about the Tudor Chronograph 9430

How big is the Tudor Chronograph 9430?

The case measures 40mm across, with a 20mm lug width. Case material: Steel. Case size alone is a poor guide to how a watch wears; lug-to-lug length and how the bracelet drops off the case matter more, which is why we suggest trying one on before you commit.

What movement is in the 9430?

Automatic, Valjoux 7750. It beats at 28,800 vph.

When was the Tudor Chronograph 9430 made?

Tudor produced this reference from 1976 to 1980. Production years matter when you are valuing one, because dial, bezel and bracelet details often changed inside a single reference run.

Does the 9430 have a nickname?

Oysterdate 'Big Block' Chronograph. Collector nicknames are not official Tudor names, but they are what people actually search for and what they are called across a showroom.

Does San Diego Jewelry Buyers buy the Tudor Chronograph 9430?

Yes. We buy this reference outright, and we lend against it if you would rather keep it. We are a family-owned San Diego buyer established in 2006, our appraisers are GIA-trained, and the appraisal is complimentary with no obligation to sell. You can bring it to our Gaslamp showroom at 907 Sixth Ave or start online. If you are looking to buy this reference instead, tell us and we will let you know when one comes in.

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Family-owned in San Diego since 2006
Paid on the spot, in person

Interested in a Chronograph (vintage) 9430?

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Own a Chronograph (vintage) 9430?

We buy this reference outright, and we lend against it. Bring it to our Gaslamp showroom or start online. Appraisals are complimentary and there is no obligation to sell.

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