4613 Parker Sonnet Fountain Pen in Matt Black. Medium Nib. 4613 Parker Sonnet Fountain Pen in Matt Black. Medium Nib. 4613 Parker Sonnet Fountain Pen in Matt Black. Medium Nib. 4613 Parker Sonnet Fountain Pen in Matt Black. Medium Nib. From £75.00 Out of stock. 0 in your basket View Basket Checkout