SOLD: SEIKO CREDOR Manual Mechanical 4S79-0020 18KT

Up for sale is my SEIKO CREDOR manual mechanical 4S79-0020 18KT + SS with power reserve indicator. This is one of the earliest model of SEIKO CREDOR mechanical series.

Production date: October 1995.
Case dimension:

• Width: 37 mm (excludes crown).
• Thickness: 8 mm.
• Lug: 18 mm.

Description:
All original.
Dial has blemish.
Sapphire crystal is in good condition.
Case, gold bezel, and caseback have light scratches from normal use.
Movement is working well. Service history is unknown. Accuracy is within original factory specification (-10 to +15 sec/day). Power reserve is 40 hours.
Original leather strap has one broken keeper. Probably can be stitched back.
Complete with outer box, inner box (has some blemish on the surface), manual book, guarantee book (expired).
Price: SOLD.

The bad: Dial has blemish. Case, gold bezel, and caseback have light scratches from normal use. Original leather strap has one broken keeper.

SOLD: SEIKO Professional Quartz Diver 7549-7010 PYF028 (Tuna Can)

Up for sale is my SEIKO Professional Quartz Diver 7549-7010 PYF028 shrouded diver (tuna can). This is the JDM (Japanese domestic market) version of the first professional 300m quartz diver in the world released in 1978. 

Production date: October 1980.
Case dimension:

• Width: 47 mm (excludes crown).
• Thickness: 14 mm.
• Lug: 22 mm.

Description:
All-original.
Bezel rotates bi-directionally with 60 clicks, firm without play.
Original bezel insert in good condition.
Original dome hardlex is in good condition with faint scratches around the center part.
Case and shroud in good condition. Shroud has swirlies due to normal wear.
Quartz movement is working well. Quick-set day and date are working well. Accuracy is within original factory spec of 1980.
Crown locks in 2.5x full turn.
Service history is unknown.
All new gaskets except for crystal gasket.
Water resistant is unknown.
Complete with brand new JDM flat vent rubber strap SEIKO DAL1BP-22. The original XGL-831 strap and buckle from 1980 are also included.
Price: SOLD.


▲ SEIKO 7549-7010 PYF028 in early 1980s SEIKO catalog. 

▲ Comparison of the original XGL 831 strap and buckle (left and middle) with modern DAL1BP 22 (right)

SOLD: SEIKO CREDOR Manual Mechanical 4S79-0020

Up for sale is my SEIKO CREDOR manual mechanical 4S79-0020 with power reserve indicator. This is one of the earliest model of SEIKO CREDOR mechanical series.

Production date: January 1998.
Case dimension:

• Width: 37 mm (excludes crown).
• Thickness: 8 mm.
• Lug: 18 mm.

Description:
All original.
Dial and hands in good condition.
Sapphire crystal is in good condition.
Case, gold bezel, and caseback is good condition.
Movement is working well. Serviced by SEIKO Service Center, Jakarta on September 2011. Accuracy is within original factory specification. Power reserve is 40 hours.
Original leather strap in good condition.
Complete with outer box, inner box, manual book, guarantee book (expired).
Price: SOLD.

SOLD: SEIKO Professional Quartz Diver 7C46-0AC0 SBBN015 (Tuna Can)

d

Up for sale is my SEIKO Professional Quartz Diver 7C46-0AC0 SBBN015 shrouded diver (tuna can).

Production date: March 2009.
Case dimension:

• Width: 48 mm (excludes crown).
• Thickness: 15 mm.
• Lug: 22 mm.

Description:
All-original.
Bezel rotates uni-directionally with 120 clicks.
Black DLC (diamond-like carbon) bezel insert.
Original dome hardlex is in good condition.
Case and shroud in good condition. Shroud has swirlies due to normal wear.
Quartz movement is working well. Quick-set day and date are working well. Accuracy is within spec.
Crown locks in 2.5x full turn.
Next battery change is March 2014.
Water resistant to 300m for Helium diver.
Solid titanium bracelet with ratcheted diver extension. Buckle has swirlies due to normal wear.
Complete with all bracelet links, box, manual book, guarantee card (expired July 2011).
Price: SOLD.