For your consideration is this vintage Montblanc 254 fountain. The fountain pen comes as a piston filler which takes and releases water and is vested with a 14kt-585-Nib. There is a company imprint on the cap. Very clean fountain pen.
Price: $175 shipped in the US via Priority Mail.
https://photos.app.goo.gl/NPzRegMNyPreyFfs8