BVLGARI Diagono Professional Chronograph 18K Yellow Gold

$8,550.00 USD


Manufacturer: BVLGARI
Model: Diagono Professional Chronograph
Reference Number: CH40GLDTA
Condition: Excellent
Gender: Men’s/unisex
Time Period: 2000s 
Retail / Compare-At Price: $17,100
Our Best Price: $8,550

Movement: Automatic
Caliber: L-0653
Jewels: -

Case Material: 18K yellow gold 
Case Diameter: 40 mm
Thickness: 11.2 mm
Waterproof: 100 ft. / 30 m.
Water Resistance: 3 ATM
Material Bezel: Fixed 18K yellow gold with a black engraved tachymeter scale to 500 UPH satin and brushed finish
Glass: Non-reflective sapphire crystal
Dial: Black matte
Dial Numerals: 18K yellow gold Arabic numeral at 12 o'clock and applied yellow gold baton hour indices, the perimeter has a 60-minute/one-fifth second scale with luminescent square inserts every five minutes/seconds
Bracelet color: Brown
Bracelet Material: Leather
Clasp: Double folding
Clasp material: 18K yellow gold

Chronograph, hours, minutes, continuous running small seconds subsidiary dial at 3 o'clock, 12-hour register at 6 o'clock, 30-minute counter at 9 o'clock, date aperture between 4 and 5 o'clock, tachymeter scale, 42-hour power reserve

Round-shaped case
18K yellow gold and luminescent coating baton-shaped hour/minute hands, yellow gold center sweep seconds/chronograph counter hand, yellow gold with red tip stick-shaped sub-dial hands
There are three recessed subsidiary dials with a gold guilloche ring
18K yellow gold solid screw-down case back engraved on the brushed perimeter with "FABRIQUE EN SUISSE" and several hallmarks. Inside there is "BVLGARI – DIAGONO – PROFESSIONAL"
Certified Official Superlative Chronometer (COSC) rating
This Bulgari Diagono Professional Chronograph has an automatic self-winding Bvlgari caliber. It's rhodium-plated with fausses cotes embellishment. It has a shock absorber device, a straight-line lever escapement, and a monometallic balance. In addition, it includes a self-compensating flat balance-spring, a hacking seconds device for precision time setting, a micrometer regulator.
This mechanism oscillates at a frequency of 28,000 vph (4 Hz).
Case, dial, and movement are all signed.
Incomplete (no box, no papers)

We stand behind the authenticity and quality of our merchandise, nothing is more important to us that a transparent transaction that makes our clients well-pleased. Twain Time has more than 30 years of experience in buying and selling previously owned luxury goods, and quality-control is extremely important to us. Our trusted experts take the worry out of buying so that you can focus on finding your most desirable watch or jewelry. Every item has undergone a thorough inspection by our knowledgeable technicians, ensuring full originality (unless stated otherwise) and perfect working condition to assure you get everything as expected. We know the value of security. To provide further peace of mind, we offer a 12-month limited warranty alongside any remaining manufacturer’s warranty on all our luxury timepieces and fine jewelry from the date of purchase. Please see our Terms & Conditions for further information.

We offer a fully insured domestic & worldwide, express & priority delivery service. If ordering from the US, your order will be sent immediately after the reception of the funds. The courier will depend on the value of the purchase, with all orders delivered the next business day. If ordering from outside the US, your order will be sent immediately after reception and clearance of the funds. International deliveries will depend on the choice of the courier and the destination. Our commitment does not end at delivery. We offer a 7-day store credit/exchange to make your experience as pleasant and comfortable as possible. Please see our Terms & Conditions for further information. We make continuous efforts to provide outstanding service. We value our clients' relationships and strive to offer the highest quality of customer service at every opportunity.

Our Clients Speak


The best dealer ever, highly recommended !!


Very nice and friendly. Try the best to assist their customers.

Alican Ş.

This is my 5th purchase from Crono24 and Twain time is the best seller until now. You can shop here they are experts. I shopped during pandemic and everything went much better then my expectations They shipped from NY to Dubai and even did the service I requested. The results are fantastic Thank you ”Ornella” for all the support I am very happy with my new vintage AP Rolay Oak 👏🏻👏🏻👏🏻👏🏻👏🏻

Patrick K.

I recently purchased a watch using Chrono24 from the dealer Twain Time out of New York and my experience was beyond compare. The level of communication exceeded my expectations and the quality of the watch I received was better than pictured. Ornella was on top of the transaction and was truly concerned with my level of satisfaction. I would extraordinarily recommend this high-end jeweler.

Roger B.

Absolute pleasure to do business with. Very helpful and accommodating. Highly recommended!

Kent Murphy

Seamless transaction! Ornella is on point at all times and the watch was immaculate as represented. I would do business with Twain Time again.

Rockwell B.

Watch met all expectations and dealer was thoughtful and pleasure to do business with.


Excellent service and response time. Trustworthy and diligent.

Kathryn Robbins

Exceptional service! I am so happy with my purchase. Because of the pandemic I had to rely on photos rather than visiting in person. In every way Twain Time exceeded my expectations. I highly recommend them.

Daniel Lee

I just wanted to highlight their commitment to customer service, even during these pandemic times. My entire experience was terrific - from start to finish. They are incredibly knowledgeable and really want to understand what the client wants, never pushing the sale. Regarding the condition of my watch - I was very happy to see that the watch came in impeccable condition, even better than the description on their website. I dealt directly with Ornella and found her very helpful and caring as well. I bought my watch through the phone and she took care of me during the entire process. Highly, highly recommend Twain Time.

Erik Barrios

I came across Twain Time's Instagram account and saw that they were listing a watch I had been looking for. They were very responsive to inquiries and readily provided additional information about the piece (including condition, service history, additional pictures, etc.). When I received the watch, the condition was as good as described and they encouraged me to contact them if there were any issues after the fact. I would happily deal with them again.

Patrick Koballa

I recently purchased a watch online from Twain Time and my experience was perfect. The level of communication exceeded my expectations and the quality of the watch I received was better than pictured. Ornella was on top of the transaction and was truly concerned with my level of satisfaction. I would highly recommend this high end jeweler.

Carol Myer

What a wonderful find. This is a jewel of a boutique with an extraordinary selection of high end watches and antique jewelry. Very competitive prices. Exquisite decor and a knowledgeable staff that is warm and welcoming. I will return again.

Lois Herring

Excellent customer service! They fixed a watch for me free of charge within 24 hours. Would definitely recommend.

Landon Metz

An absolute pleasure to work with.

Frederick hoberg

First class operation!

Barry Sloane

Excellent merchant. White glove service and quality merchandise.

Shamsa A.

The watch is as described Very good condition The seller was helpful and shipped the watch really fast Absolutely recommend!