On A Whim Woodworks in Papillon Resin from Turnt Pen Co Fountain Pen
This pen has been lovingly used. Â It comes complete with its original box. Â It is equipped with a Fine Steel nib.
From On a Whim Woodworks website:
Papillon in the Zephyr profile has 13 mm cap threads, a Jowo  #6 and a premium Schmidtt converter.  It is widest at the top and tapers the length of the pen and has a nearly flush joint. Material by Turnt Pen Co.