Circa 1950-1960.
Taken from Rene Rondeau's book on page 212, "Another European Hamilton, this watch modeled upon the Thin-o-Matic T-403, but in a slightly smaller case with more pronounced lugs. Most significantly it has the addition of a date window at 3. The movement is a full-rotor Swiss automatic, unlike the the micro-rotor Thin-o-Matic."
Presented here is the calendar model asymmetric Hamilton 64019-4 automatic watch in a yellow gold-plated case with a stainless steel back. The two-tone gold and white colored dial shows signs of patina and features a fully functional date window at 3 o'clock. This timepiece sets and winds smoothly and is powered by a Hamilton calibert 2464 automatic winding movement with 21 jewels that has been cleaned, oiled, and timed for 24 hours. The watch runs strong and has been fitted with a new acrylic crystal and brand new IW Suisse alligator calf straps in dark brown. The outer back case reads: Antimagnetic, Stainless Steel Back, Swiss Made, Waterproof, Incabloc, 4025-4. On the reverse side it is engraved with the serial 918544. This asymmetric Swiss Hamilton measures approximately 33.5mm in width (excluding the crown) x 38mm from lug tip to lug tip.
Taken from Rene Rondeau's book on page 212, "Another European Hamilton, this watch modeled upon the Thin-o-Matic T-403, but in a slightly smaller case with more pronounced lugs. Most significantly it has the addition of a date window at 3. The movement is a full-rotor Swiss automatic, unlike the the micro-rotor Thin-o-Matic."
Presented here is the calendar model asymmetric Hamilton 64019-4 automatic watch in a yellow gold-plated case with a stainless steel back. The two-tone gold and white colored dial shows signs of patina and features a fully functional date window at 3 o'clock. This timepiece sets and winds smoothly and is powered by a Hamilton calibert 2464 automatic winding movement with 21 jewels that has been cleaned, oiled, and timed for 24 hours. The watch runs strong and has been fitted with a new acrylic crystal and brand new IW Suisse alligator calf straps in dark brown. The outer back case reads: Antimagnetic, Stainless Steel Back, Swiss Made, Waterproof, Incabloc, 4025-4. On the reverse side it is engraved with the serial 918544. This asymmetric Swiss Hamilton measures approximately 33.5mm in width (excluding the crown) x 38mm from lug tip to lug tip.