New acquisition

Hi there - I fell in love with the look of this watch, and know the caliber 8541 to be excellent - but I am having trouble identifying anything else about it. There are similar pieces marked Ingenieur, but not this one. If anyone can help tell me a bit about the watch I'd be really grateful.

Very attractive IWC indeed. 
Information gained from the caseback is Reference 847
from between 1969 to 1971 

it is not an Ingenieur 

Thaks Mark - really appreciate the note.

It's so hard to get information about what it should look like - not asking you to authenticate, but does it all seem as it should to you? I have a couple of new IWCs, but this is my first toe-dip in the vintage market so I feel a bit vulnerable!

By the way, just looked at your Instagram. Beautiful!

Looks great - as was saif the case has had a decent polish but thats being really picky.
Its a bit apart from the other "calatrava" style IWC cases, if its an 847 it should be the jumbo 37mm case instead of the usual 34-35mm they are found in.
The bracelet it is on is also quite rare - an early iwc Gay Freres with the correct "I" stamped endlinks. Nice find!

Thanks - they have buffed away quite a lot of its 50 years of life, I know! 

Thanks for your comments. Very interesting and helpful. And you’re right - it’s 37mm which is big for it’s time. i hadn’t appreciated the rarity of the bracelet, so i’m Now even more chuffed!