This pen was kindly sent to me by Grifos Pens in Italy.  Made out of Sterling silver and 5,000 year old bog oak, this is a fascinating pen.

Measurements 
Length (capped): 143.5 mm/5.65″
Length (uncapped): 122.2 mm/4.81″
Length (posted): N/A
Diameter (section): 9.9 – 10.0 mm/0.39″ – 0.39″
Diameter (barrel): 10.6 – 13.5 mm/0.42″ – 0.53″
Weight (all): 36 g
Weight (cap): 19 g
Weight (body): 17 g