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![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=328,h=211,fit=crop,trim=3.65296803652968;0;25.570776255707763;0/mnl6KQoL3LFW8Gj0/sinn_101_duo_1200_800-AVLNn5361WS5aMJ3.jpg)
Sinn 101 A - Sinn 101 B
SINN 101 A
Case Screw-back model with black dial and two silver subdials. The 30- minute chronograph and permanent second subdials are positioned at 3 and 9 o’clock.
The black bezel is bidirectional with a silver triangle at 12 o’clock and show minute markings. The outer case back has 20 ATM 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 8XXX.
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=480,h=480,fit=crop,trim=0;0;0;0/mnl6KQoL3LFW8Gj0/sinn_101_a_v7733_1_1170_1170-mv04RjVkG2uM6QOb.jpg)
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=328,h=328,fit=crop,trim=0;0;0;0/mnl6KQoL3LFW8Gj0/sinn_101_a_v7733_1_1170_1170-mv04RjVkG2uM6QOb.jpg)
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=243,h=243,fit=crop/mnl6KQoL3LFW8Gj0/sinn_101_a_v7733_3_1170_1170-AzG8lrjxQli1JeP4.jpg)
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=243,h=243,fit=crop/mnl6KQoL3LFW8Gj0/sinn_101_a_b_caseback_1170_1170_1-mnl6DL9gxDuDDzQw.jpg)
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=243,h=243,fit=crop/mnl6KQoL3LFW8Gj0/sinn_101_a_v7733_5_1170_1170-YanMRBP46EU4e7Vn.jpg)
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=243,h=243,fit=crop/mnl6KQoL3LFW8Gj0/sinn_101_logo_1170_1170-YX4XRy96eef8PgOQ.jpg)
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=480,h=480,fit=crop,trim=0;0;0;0/mnl6KQoL3LFW8Gj0/sinn101bv7733_2_1170_1170-mP47Vpg1VxH6ao9N.jpg)
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=328,h=328,fit=crop,trim=0;0;0;0/mnl6KQoL3LFW8Gj0/sinn101bv7733_2_1170_1170-mP47Vpg1VxH6ao9N.jpg)
SINN 101 B
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.
The black bezel is bidirectional with a silver triangle at 12 o’clock and show minute markings. The outer case back has 20 ATM 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 8XXX.
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=243,h=243,fit=crop/mnl6KQoL3LFW8Gj0/sinn101bv7733_1_1170_1170-AE0MJpRM2WhkxalO.jpg)
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=243,h=243,fit=crop/mnl6KQoL3LFW8Gj0/sinn_101_a_b_caseback_1170_1170_1-mnl6DL9gxDuDDzQw.jpg)
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=243,h=243,fit=crop/mnl6KQoL3LFW8Gj0/sinn101bv7733_3_1170_1170-m7VMaKqV93iDWPKo.jpg)
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=243,h=243,fit=crop/mnl6KQoL3LFW8Gj0/sinn_101_logo_1170_1170-YX4XRy96eef8PgOQ.jpg)
CASE BACK
The outer case back is signed with 20 ATM, 361-33, and a serial number. The movement is a Valjoux 7733 and is signed beneath the balance wheel.
Serial number is four digits starting with 8XXX.
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=480,h=480,fit=crop,trim=0;0;0;0/mnl6KQoL3LFW8Gj0/sinn_101_a_b_caseback_1170_1170-d9530B7ep9hPjNQ0.jpg)
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=328,h=328,fit=crop,trim=0;0;0;0/mnl6KQoL3LFW8Gj0/sinn_101_a_b_caseback_1170_1170-d9530B7ep9hPjNQ0.jpg)
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=480,h=480,fit=crop,trim=0;0;0;0/mnl6KQoL3LFW8Gj0/sinn_101_movement_1170_1170-AVLzkear8Gh7PLp9.jpg)
![](https://assets.zyrosite.com/cdn-cgi/image/format=auto,w=328,h=328,fit=crop,trim=0;0;0;0/mnl6KQoL3LFW8Gj0/sinn_101_movement_1170_1170-AVLzkear8Gh7PLp9.jpg)
MOVEMENT
VALJOUX 7733
- Manual Winding
- Chronograph 60s, 30min
- Small Seconds
- 17 Jewels
- Cam Lever Movement
- 18,000 A/h
VINTAGE SINN COLLECTOR
Copyright © Vintage Sinn Collector 2023
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