I just weighed mine at 16.08 ounces, although that's on a digital kitchen scale (ears still ringing, wife spotted me with car parts in the kitchen again....).
Hope others can weigh in (pun intended) to confirm their pulley weight, mine has a small amount of paint missing from the rear face but is still nearly 2oz more than yours Lloyd.
Tim, that's great data, thanks for making the effort to weigh your pulley.