A Piece Unique and likely the last Pure Resonance to be produced by Armin Strom. This custom ordered Pure Resonance is in a steel 42mm case with Côtes de Genève stripes on the central bridges. The combination is striking against the blue backdrop and makes the white lacquer dial stand out. The hands are blued steel for perfect readability, contrast and beauty. The exhibition case back showcases the superbly finished Manufacture caliber. The case back is engraved, "Piece Unique" and the movement is engraved, "No. 01/01".

Piece Unique No. 01/01

TECHICAL SPECIFICATIONS
Calibre
ARF16
Functions
Hours, minutes
Impulse
Two independent movements
Winding mechanism
Manual-winding
Regulating system
Two independent regulation systems connected by a resonance clutch spring
Frequency
25'200 vph / 3.5 Hz
Jewels
38
Nb of Components
213
Dimensions
- 34.40 mm
- 7.05 mm
Power reserve
48 hours
Distinctions
- Two-independent regulation systems connected by a resonance clutch spring
*Case
- Stainless steel
-  Sapphire crystal and case back with anti-reflective treatment
Diameter
42 mm 
Height
12.25 mm
Lug-to-lug
48.57mm
Water-resistance
5 ATM
Dial
- White lacquered dial
Hands
Blued steel
Strap
Blue alligator leather

Oster Jewelers is an Authorized Armin Strom Watch Dealer