Johns Old Mercury (a pay to use site) White Paper has a comprehensive but
somewhat complex listing of Kiekhaefer data if year and production is an
important consideration.
Louis
Ok thanks for your help it looks like it is a 1946 186xxx serial number. From what I understood it was just 47 48 production so that helps a lot. Any idea of a value I could get photos later this week if anyone has an idea. I believe it was the motor my grandfather used at times up to about 20 years ago before he got another boat and motor which he sold in 2008.
There is no "good" answer for this, price is dependent on where you are, motor conditon, what someone would pay for it, etc. In my neck of the woods (WI) 100 bucks or less is pretty normal, occasionsally there is a real nice one that goes for a little more. Pictures and where it is located may help locating a buyer.