Longines Ultra-Chron Automatic Calendar circa 1967 (18K Gold)

Brand: Longines Model: Ultra-Chron Automatic Calendar ref. 69-552AAC (solid 18K gold case with high-beat movement); Swiss Made circa approximately 1967 Case: Solid 18K yellow gold case opens through the crystal and is approximately 34.5mm in diameter excluding the signed Longines winding crown Strap: Vintage 11/16" (~18mm) black genuine crocodile strap with matching black stitching and 16mm yellow gold-plated Longines tang buckle Movement: Longines cal. 431 hi-beat self-winding automatic movement (17 jewels) with date and center sweeping-seconds; 36,000 BPH; Swiss Made Features: Stunning original brushed metallic silver dial with applied gold-tone logo and hour markers; date display at 3 o'clock; in-house Longines cal. 431 hi-beat movement (36,000 BPH); solid 18K yellow gold case with NOS Longines domed acrylic crystal; vintage genuine crocodile strap Condition: Very nice original condition overall with minor overall wear consistent with age and light use; excellent 18K yellow gold cas