Longines Calatrava, Guilloché dial, ref. 2164-1 in 10k gold fill

A rare and fine Longines Calatrava, Guilloché dial, ref. 2164-1
 
10K gold filled case, snap-on back, angled bezel, 33mm diameter, sweeping downturned lugs.
Case appears to maintain the original factory finish.
 
Original white guilloche dial, applied gold indexes and dots, in satisfacory condition.
Printed "Longines" below 12 o'clock with applied gold winged hour glass logo and "Automatic" and subsidiary seconds above 6 o'clock.
 
Original steel dauphine hands.
 
Original crown.
 
Replacement plexi crystal.
 
Longines Caliber 19A automatic winding movement, recently serviced and in good working order.
 
Brand new leather strap with steel buckle.