To help assist customers in determining the scarcity or collectibility of a given timepiece in today's market, some watches in this catalog have been assigned a rarity/collectibilty grade of 1 star through 4 stars. With the stars indicating the following:
Extremely Rare/Investment Grade Collectible
Factors that influence the assigned "collectibility grade" are:
- Horological milestones (like the first automatic, the first alarm, etc.)
- Technical Quality and innovative design.
- Historical Importance.
- Condition in Relationship to other examples of similar type.
- Low survival rate to other examples of similar type.
- Investment potential.