This is a set of 8 authentic Cartier Panthère gold-plated spring bars with quick-release ends, designed for Cartier Panthère 27mm watches, such as the Cartier Panthère 1310.

These spring bars have a diameter of 1.78mm (approximately 1.8mm) and feature a quick-release mechanism for easy strap changes without tools.

The writing on the packet reads:
BAR/SPRING PANTHERE
37837855MM
Cartier International Service

Item Details:

• Brand: Cartier

• Model: Panthère (27mm case size)

• Part Type: Spring bars

• Diameter: 1.78mm (about 1.8mm)

• Finish: Gold-plated

• Style: Quick-release

• Quantity: 8

• Reference: 37837855MM

• Condition: New, authentic Cartier parts

Please check the photos for confirmation of style and condition.

If you're unsure whether these fit your watch, feel free to send a message — I’m happy to help.