This is a Wahl Wedgewood 12 karat yellow gold filled over silver fountain pen c. 1928. The Wedgewood Design is a gold-on-silver design where part of the gold fill is cut away and the straight and ripple line pattern is cut into the silver base metal. This 4 15/16 inch long pen is the medium size slender model 4213P with a 14 karat gold Number 2 size nib. This nib is stamped WAHL 2 14K. Introduced and probably only produced in 1927 and 1928.