Nib: Medium 14k Gold Wyvern Perfect
1947 Wyvern model 60C, Lever-Filled, black with gold filled trim
Wyvern is one of the oldest British pen manufacturers, going back to 1880s, so there's a big range of models to choose from. ... Wyvern made excellent nibs, varying from rigid to very flexible. Some of the later pens had very small nibs. The gold plating on the post-war pens tends to be pretty poor.