Here we have an eye-catching 1960s Avia 9ct gold Chronograph. It has a 36mm yellow gold case, of 3-piece construction, with a polished finish. It is signed with Swiss hallmarking for 9ct gold and was manufactured by Jules Blum. It has the Avia signed crown to the left, with the rectangular pushers for the chronograph. The dial is a silver satin tone, with gold tone baton hour markers. It has dished silver sub-dials with a sunburst finish, one for the seconds and one for the 30-minute counter. It has a red Telemetre scale with further blue Tachymeter scale to the exterior. It is powered by the Landeron 149 Chronograph movement, which has been recently serviced and is functioning well.
 
This is a useful companion with the Telemeter allowing the user to measure the approximate distance from an event that can be seen, or heard, such as a firework or bolt of lightning/thunder. The Tachymetre scale allows for the approximate speed of a vehicle over a known distance. 
 
The dial is a silver satin base tone with gold accents provided by the applied baton hour markers. It is a classic layout with the two sub dials, consisting of the constant seconds at 9 O’clock and the 30-minute counter at 3 O’clock. The sub-dials are sunk into the dial and have a dished design. They have a bright silver sunburst finish with the grained concentric circles catching the eye. The seconds/minutes track surround the inner section of the dial, with the red Telemetre scale outside of it. There is also the blued Tachymetre scale to the exterior. It is signed ‘Avia 17 jewels’ below 12 O’clock, with the ‘Incabloc’ signing above 6 O’clock.
 
The case is well proportioned, measuring 36mm x 36mm. It has a long lugs which extend the total length to 44.5mm, adding presence on the wrist. With a 12mm depth, the watch is a snug fit to the wrist. It is a three-piece design, with the snap on bezel holding the crystal, the centre section with the lugs and the snap on case back. It is formed of 9ct yellow gold and has the polished bevelled bezel design, which falls to meet the main body of the case. The sides of the case are flat with the polished finish with the long lugs tapering towards the tip. The lugs have a subtle polished bevel to the outside which provides an intriguing transition to the flat polished sides. To the right is the original Avia signed crown, which is sandwiched between the two rectangular Chronograph pushers. 
The case back has the dished design with the polished exterior and brushed finish to the face. It is signed with Swiss hallmarking for 9ct gold, with the serial number and hammer 105. The Poincon De Maitre 105 shows the case was manufactured by Les Fils de Jules Blum. They are well known for providing cases to many IWC dress watches with Cal 89 and 83 movements. They specialised in classic dress cases with interesting lug designs.
 
Inside is the Landeron Calibre 149. It is a manual wind chronograph movement, with a jewel count of 17. It is a two button, cam switching chronograph. The top button starts the chronograph, whilst the bottom stops and resets. It displays the hours, minutes, small seconds, 30-minute counter and central 60 second hand. It is in excellent condition, having been recently serviced and is keeping time to within +5 seconds a day.
 
Please see the images as these compliment and aid the description provided below.
A further condition report is below.
 
Dial: 
The dial is original and is in good overall condition. It is a silver satin base tone which is good and even. It has some light marks associated with age. The sub-dials are good with the dished design and bright silver textured sunburst. The hour markers are good, without corrosion. The red Telemetre track is good, but it has some wear to the numerals on the outer blue track.
 
Hands: 
The hands are of Facetted stick style and are original. They are in good condition with an even gold tone. The central second and sub dial hands are also good and original.
 
Glass: 
The crystal is a replacement which is in perfect condition.
 
Crown: 
The gold tone crown is original and has the ‘A’ logo. It is in good condition.
 
Case:
The case is 9ct gold and is in good condition. The tone of the yellow gold is good and even. It has been lightly polished to restore the finishes. There are light surface scratches. 
 
Caseback:
The snap-on case back is formed of 9ct gold and is in good condition for the age. It has a polished finish to the outside with the brushed face. The hallmarking is good and well defined. It has been lightly polished and brushed to restore the finishes. It has some light marking.
 
Strap: 
The watch is presented on a period Bulova leather strap which is of excellent quality and is in unworn condition. 
 
Movement: 
The movement is a Landeron Calibre 149. It is a manual wind chronograph movement, with a jewel count of 17. It is a two button, cam switching chronograph. The top button starts the chronograph, whilst the bottom stops and resets. It has a frequency of 18,000 BPH and a 41-hour power reserve. 
It displays the hours, minutes, small seconds, 30-minute counter and central 60 second hand. 
 
It has been recently serviced. It’s keeping time to within +5 seconds a day, with an amplitude of 310 degrees and a beat error of 0.4m/s.
 
Case dimensions:
Case width: 36mm
Case width with crown: 38.5mm 
Case length: 36mm 
Case length lug to lug: 44.5mm
Case Depth: 12mm
Lug width: 18mm