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Reference number.
https://www.breitlingsource.com/phpBB2/viewtopic.php?f=1&t=23647
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Author:  preimel [ Fri Oct 15, 2010 8:15 pm ]
Post subject:  Reference number.

Im trying to figure out what year and model my SOSF is.
I want to know if it is a newer steelfish or an older SF X-plus.

A17390

If anyone can give me some insight it would be greatly appreciated.

Author:  Sharkmouth [ Sat Oct 16, 2010 12:00 am ]
Post subject:  Re: Reference number.

The "X-Plus" suffix to the Steelfish name was used in 2006 to distinguish the new, larger (44mm) Steelfish from the older 42mm version. The following year, the X-Plus was dropped from the name. There's no difference in an X-Plus A17390 Steelfish to a non X-Plus A17390.

A quick way to tell the rough age is if the watch has a square or arrow head seconds hand. The arrow head first appeared in the 2008 Chronolog so would indicate a late 2007 or later manufacture.

You can find out precisely when your watch was manufactured by looking at the tiny numbers between the lugs at 6. The 4 digit code is week number/year so 1508 would be the 15th week of 2008.

Hope this helps.

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