Full Details

Name and Model Number Breitling Chronoslide Type 2
Country of Origin Switzerland
Date of Manufacture c1950 - 1970 
Front Scales C/D
Back Scales None
Scale Length Approx 16cm.
Type of Rule Watch Type
Construction Metal
Area of Use Generic
Comment Breitling Chronoslide Type 1677 device with the central “totaliser” hand rather than
the separate small dial (Type 1577) are far rarer, and definitely more unusual.
The larger central dial makes the stop watch function far easier and quicker to read,
however there is no difference in accuracy between the rotating bezel slide rule on
this and the other Breitling Chronoslide Model.
Rarity RRR
Donor Collection of an American Gentleman
Match Number 57

RR = Rare -- 1 of 25 collectors has one; it may take a year to find an example in the marketplace.   
RRR = Very rare -- only very few known to collectors; may take several years before one comes up for sale.   
RRRR = Extremely rare -- a museum piece; unlikely that an example will ever come up for sale.