On Sun, Sep 18, 2016 at 8:13 AM, wmy2@f... 
wrote:

> Markings are a logo-a 1/4 inch circle with S over F, separated by two v's
> pointing toward the center.  Also A-M-F and S-8.  I have googled AMF tool,
> S-8, everything I could think of with no success.


http://www.amf.de/en/company/products/hand-tools-2/

Could be German?

Maybe poke around in here, guessing at your description, thinking pin
wrenches about pg 50-60

http://www.amf.de/en/downloads/current-catalogues/Schraubwerkzeuge_EN_2016.pdf


-- 
Kirk Eppler in HMB, CA