![Does anyone know what the "A" at the bottom of a vintage Parker Duofold nib means? I know that a "P" apparently means that the nib was manufactured by Parker itself and Does anyone know what the "A" at the bottom of a vintage Parker Duofold nib means? I know that a "P" apparently means that the nib was manufactured by Parker itself and](https://i.redd.it/67vo6lkvtpo61.jpg)
Does anyone know what the "A" at the bottom of a vintage Parker Duofold nib means? I know that a "P" apparently means that the nib was manufactured by Parker itself and
![Parker Duofold UK - New Standard, Blue, Aerometric, Broad 14k Nib (Excellent, Works Well) - Peyton Street Pens Parker Duofold UK - New Standard, Blue, Aerometric, Broad 14k Nib (Excellent, Works Well) - Peyton Street Pens](https://cdn11.bigcommerce.com/s-5ko0zosub2/images/stencil/1280x1280/products/8500/10601/duouk_blue_standardbroad_1__62748.1606154945.jpg?c=1)
Parker Duofold UK - New Standard, Blue, Aerometric, Broad 14k Nib (Excellent, Works Well) - Peyton Street Pens
![Amazon.com : PARKER IM Fountain Pen, Brushed Metal, Fine Nib with Blue Ink Refill (1931649) : Office Products Amazon.com : PARKER IM Fountain Pen, Brushed Metal, Fine Nib with Blue Ink Refill (1931649) : Office Products](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/61I71E6-85L.jpg)