This pen was sent to me by Susanna of Giardino Italiano: made by Visconti, it is exclusive to that shop, and it was created to commemorate the shop’s 20th anniversary.

Measurements
Length (capped): 140.1 mm/5.52″
Length (uncapped): 123.8 mm/4.87″
Length (posted): 159.6 mm/6.28″
Diameter (section): 10.3 – 11.6 mm/0.41″ – 0.46″
Diameter (barrel): 12.0 – 12.5 mm/0.47″ – 0.49″
Weight (all): 35 g
Weight (cap): 14 g
Weight (body): 21 g