PANERAI REF. 6644 PAM 183 BLACK SEAL STEEL
Officine Panerai, Firenze 1860, "Radiomir - Black Seal,"
Ref. OP 6644. Made in a limited edition of 1500 pieces
Fine, large, cushion-shaped, water-resistant, stainless
steel wristwatch with a stainless steel Panerai buckle.
Three-body, solid, polished, transparent screw-
down case back, removable wire lugs with 4 screws,
screw-down winding crown, sapphire crystals.
Black with recessed luminous Arabic numerals
and baton indexes, subsidiary seconds dial at 9.
Luminous baton hands.
Cal. OP X, rhodium-plated, fausses cotes decoration,
17 jewels, straight-line lever escapement, monometallic
balance, shock absorber, self-compensating
flat balance spring, swan neck regulator.