Can any one help me identify this Quartz Ingenieur?

I have had this watch for nearly 10 years now; I even got it serviced at Schaffhausen around 3 years ago but I still can't pin down its Ref: No. Can anyone help?

Like many people I thought it was a lady's (or Skinny)version as it measures 32 mm x 5 mm but I gather from reading around it is in fact a man's watch. It would seem from the great Moeb.com database that the Lady Ingenieurs are 26mm x 7.2mm.

The case number suggests a manufacturing date of around 1987. I also wonder if the inner case is made of titanium as I hope you case see from the pictures below the outside looks like SS.

picasaweb.google.com/117175013964574761805/SkinnyIngenieur?authkey=Gv1sRgCLvOuP-LzsX6lwE&feat=directlink

Anyway I would be so grateful if anyone can cast some light on the matter?

Best
Chris

Looks like a ref. 3361

www.moeb.ch/Ingenieur/07e_TitanGold.html

pic from moeb.ch

Thanks so much for your help it is much appreciated and it looks as if your analysis is accurate.

By the way I have to say your 'ingenieur' manual is such a great work. I love browsing it.

Thanks again
Chris

You have to thank Marco Schoenenberger for making the site