<p class="font_8">**Alpina Alpiner Regulator Swiss Automatic Heritage 2003 Model AL-650NSSR5E6 Review by A.I. WatchMetrics**

### Watch Summary:
The Alpina Alpiner Regulator is a distinctive timepiece that falls under the **Heritage/Vintage** style category. This watch is a nod to Alpina's rich history, featuring a regulator dial that separates the hour, minute, and second hands for enhanced legibility—a design reminiscent of traditional regulator clocks used by watchmakers. The Alpiner Regulator is powered by an **automatic movement** with a power reserve of approximately 42 hours, making it suitable for those who appreciate mechanical precision and historical design. This watch is ideal for enthusiasts who value classic aesthetics and the technical intrigue of a regulator layout, offering a unique appeal to collectors and those with a penchant for vintage-inspired timepieces.

### Overall Watch Rating: 7.5/10.0

- **Dials &amp; Design Metric (8.5/10.0)**
The Alpina Alpiner Regulator features a unique regulator dial layout, which is both functional and visually striking. The craftsmanship is evident in the applied markers and the clean, legible design, which pays homage to traditional watchmaking.

- **Movement Metric (8.3/10.0)**
The watch is equipped with the AL-650 automatic movement, known for its reliability and precision. While not in-house, the movement is well-regarded for its performance and contributes positively to the overall rating.

- **History &amp; Innovation Metric (8.0/10.0)**
Alpina's heritage in producing regulator watches adds historical significance to this model. The design reflects the brand's commitment to traditional watchmaking, though it lacks groundbreaking innovation.

- **Material Metric (7.8/10.0)**
The watch uses high-quality stainless steel, offering durability and a classic look. While the materials are standard for its class, the finishing is commendable.

- **Functions Metric (7.5/10.0)**
The Alpiner Regulator includes practical features such as water resistance suitable for everyday wear and a transparent caseback that showcases the movement.

- **Versatility Metric (7.5/10.0)**
This watch is versatile enough for both formal and casual settings, thanks to its classic design and moderate size, making it a suitable choice for various occasions.

- **Rarity Metric (7.0/10.0)**
As a heritage model, the Alpiner Regulator is not widely produced, adding a level of exclusivity. However, it is not limited edition, which affects its rarity score.

- **Brand Metric (6.8/10.0)**
Alpina is recognized for its quality and heritage in the mid-premium segment, though it does not have the same prestige as high-end luxury brands.

- **Complications Metric (6.5/10.0)**
The regulator complication is unique and adds interest, but the watch lacks additional complications that could elevate its score in this category.

### Celebrity and Historical Figures:
While no specific celebrities are known to wear the Alpina Alpiner Regulator, Alpina has a strong reputation among watch enthusiasts and collectors who appreciate its historical significance and technical designs. The brand is often associated with adventurers and those who value precision and reliability in their timepieces.</p>