SINN 102 A

SINN 102 A - Valjoux 234

Case Screw-back model with black dial and two white subdials. The 30- minute chronograph and permanent second subdials are positioned at 3 and 9 o’clock.

The black bakelite bezel is bidirectional with a triangle at 12 o’clock and show minute markings. The outer case back has 361-234 and the serial number stamped.

The movement is a Valjoux 234 and is signed under the balance wheel.

Serial number 4 digits starting with 6XXX.

SINN 102 A

SINN 102 A - Valjoux 236

Case Screw-back model with black dial and two white subdials. The 30- minute chronograph and permanent second subdials are positioned at 3 and 9 o’clock.

The black bakelite bezel is bidirectional with a triangle at 12 o’clock and show minute markings. The outer case back has 361-236 and the serial number stamped.

The movement is a Valjoux 236 and is signed under the balance wheel.

Serial number 4 digits starting with 6XXX.

SINN 102 A

SINN 102 A - Valjoux 7733

Case Screw-back model with black dial and two big white subdials. The 30- minute chronograph and permanent second subdials are positioned at 3 and 9 o’clock.

The black bakelite bezel is bidirectional with a triangle at 12 o’clock and show minute markings. The outer case back has 361-33 and the serial number stamped.

The movement is a Valjoux 7733 and is signed under the balance wheel.

Serial number 4 digits starting with 5XXX.

SINN 102 B

SINN 102 B - Valjoux 234

Case Screw-back model with black dial and two subdials. The 30- minute chronograph and permanent second subdials are positioned at 3 and 9 o’clock, Date at 6 0’clock.

The black bezel is bidirectional with a round luminous point at 12 o’clock and show minute markings. The outer case back has the serial number stamped.

The movement is a Valjoux 234 and is signed under the balance wheel.

Serial number 4 digits starting with 4XXX.

CASE BACK

The outer case back of all Sinn 102 models is designed with 12 facets. Only the engraving is present on the case back as follows.

The reference is indicated with 361, followed by the movement designation, - 234 for a Valjoux 234 movement, - 236 for Valjoux 236, - 33 for Valjoux 7733, - 48 for Landeron 248.

Below that, the serial number is engraved, and it is always four digits long. Depending on the model variant, it starts with either 4XXX, 5XXX, or 6XXX.

For example, 361-234 for a Sinn 102 A with a Valjoux caliber 236, followed by the four-digit serial number starting with 6XXX.

MOVEMENT

VALJOUX 234

- Manual Wind

- 60s, 30min

- Small Seconds

- Date

- Column Wheel

- 21600 A/h

- 17 jewels

In the case of Sinn 102A and 102B, different movements are installed depending on the variant. Hand-wound movements such as Valjoux 7733, Valjoux 234, Valjoux 236, and Landeron 248 were used.

SINN 101/102

SINN 101/102 - Landeron 248

One of the first Sinn models in this case form was the Sinn 101/102, which appeared as a precursor to the Sinn 102. It featured a case with a screwed-down back, a black dial, and two sub-dials.

30-minute counter and permanent seconds sub-dial at 3 and 9 o'clock. The black bezel is bidirectionally rotatable and has a round luminous dot at 12 o'clock, also as a triangle, and shows minute markers.

The outer case back is signed with a serial number. The movement is a Landeron 248 and is signed under the balance.

Four-digit serial number beginning with 2XXX, 3XXX.