Tudor 'Big Block' Chronograph

SKU AS03109
SKU AS03109

Why We Love it

Why We Love It

When it comes to classifying a 'neo-vintage' wristwatch, we look for the following criteria:

- Classic case proportions

- Mechanical Movement

- Tritium Luminous Material

- Acrylic Crystal

- Timeless Design

This Tudor 'Big Block' Reference 79170 checks all of those boxes with a full size 39mm Oyster Case design, 'bombproof' Valjoux 7750 automatic winding chronograph movement, richly patinated indices and handset, magnified acrylic crystal, and a triple-register matte 'reverse panda' dial.

Gaining popularity in recent years in part due to the success of Tudor's new Heritage Chrono line, the Big Block is not only their predecessor, but also preceded its big brother - the Rolex Daytona - in having an automatic winding chronograph mechanism.

This particular example is in excellent condition throughout with evenly faded luminous material and a strong case - it even includes a Tudor-signed bracelet.

Quality examples such as this one are being snapped up quicker than ever, so don't wait - the time is now to scoop up neo-vintage masterpieces like this one!

The Story

Though Tudor has been, from its inception, the gateway brand to horological behemoth Rolex, it's made strides in distinguishing itself. Foremost is aesthetics, with Tudor models with a more sporty, athletic flavor than their ofttimes staid Rolex counterparts. And despite the rugged exterior, Tudor is no slouch in the technical department, achieving horological distinctions sometimes decades ahead of their parent company. 

In the Rolex/Tudor stable, the Daytona commands a great deal of respect, remaining one of the most well-known and sought-after Rolex lines. But while Rolex was still filling their watches with hand-cranked units well into the 1980s (and didn't conceive of an in-house chronograph movement until 2000), Tudor was rolling out chronographs driven by automatic Valjoux drivetrains - a fact that is all too often overlooked when the conversation veers toward collectible vintage chronographs. 

The 'Big Block', which was released in 1974, marked an impressive leap for Tudor, largely due to the introduction of the Valjoux 7750 Automatic movement. In addition to bringing the perk of self-winding technology to Tudor's popular line, the new drivetrain included an hour register and a quick-set date, features that made the watch more functional and more enjoyable to wear. 

A:S Guarantee


Our Pledge

Analog:Shift stands behind the authenticity of our products in perpetuity.


Since our pieces are vintage or pre-owned, please expect wear & patina from usage and age. Please read each item description and examine all product images.


We back each Analog:Shift vintage timepiece with a one-year mechanical warranty from the date of purchase.

International Buyers

Please contact us prior to purchase for additional details on shipping and payment options.

Shipping & Returns


All of our watches include complementary insured shipping within the 50 states.

Most of our products are on hand and will ship directly from our headquarters in New York City. In some cases, watches will be shipped directly from one of our authorized partners.

We generally ship our products via FedEx, fully insured, within 5 business days of purchase. An adult signature is required for receipt of all packages for insurance purposes. Expedited shipping is available at an additional cost. We are also happy to hand deliver your purchase in Manhattan or you may pick it up at our showroom.

Returns must be sent overnight or by priority international delivery, fully insured and paid for by the customer. A restocking fee may apply. Watches must be returned in the same condition as initially shipped.

We welcome international buyers, please contact us prior to purchase for additional details on shipping and payment options.

Tudor 'Big Block' Chronograph

Tudor 'Big Block' Chronograph

Tudor 'Big Block' Chronograph


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