PP 28-20

PP 28-20 (click to enlarge!)
PP 28-20
© Patek Philippe

PP TO 28-20 (click to enlarge!)
PP TO 28-20
© Patek Philippe

Calibre PP 28-20/220, exploded view (click to enlarge!)
Calibre PP 28-20/220, exploded view
© Patek Philippe

Calibre 28-20 REC is a hand-wound watch movement from Patek Philippe.

This tonneau-shaped calibre has 8 (10) days power reserve.

Variants

Calibre Dimensions (mm) Jewels Parts Usage Features
28-20/220 Ø 27, H ? 29 Gondolo 10 Day Power Reserve 51002 barrels, Gyromax® balance,
Power reserve 10 days
TO 28-20 REC 10J PS IRMØ 27, H ?29 Gondolo 10 Day Tourbillon 5101Tourbillon, 2 barrels, Gyromax® balance,
Power reserve 10 days
28-20 REC 8J PS IRM C J Ø 27, H ? 28142Gondolo 5200 Gyromax® balance, Spiromax® balance spring, Pulsomax® escapement,
Power reserve 192 h (8 days)

Description:

Functions:

Data:

  • 28,800 A/h (28-20 REC 10J PS IRM: 21.600 A/h))
  • 28×20 mm, H ?

Production period:

  • ?-present
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