|he trouble with this first design was that the ink dried on the feed too quickly if the pen was left unused for a while, but also that it sometimes too willingly released ink and created a nice blob, it also frequently leaked in the cap. So in 1952 the complete Parker 21 line was redesigned.|
It is important though to remember that all parts between the two Parker 21 designs are not interchangable, the nib and feed can be exchanged, the section and filler can not. The Mark II's redesigned section fitted snugly over the nib and feed — they are easily told apart since the Mark I nib and feed was attached to the filler unit when the section was unscrewed, Mark II "stuck" in the section.
he Parker 21 quickly became very popular and soon took over 60 percent of Parkers over $5 market.
Also in 1952 the Parker "21" Custom was introduced with a gold filled cap, as well as the Parker "21" DeLuxe, which had a chrome cap with gold-filled trim.
y 1952 the cost for a pen was $5.75 and $4.75 for a pencil, this could be compared with a Parker 51, that cost $15, a Parker 51 Special that cost $12.50 and a bottom-line (new) Parkette, which you could buy for a mere $3.50.
The colours in 1952 were:
y 1953 The Parker 21 Super was introduced. It sported a clip that was to survive well into the 1990's on another pen, introduced in 1960, the Parker "45". This new clip was more stylized than the previous and had fewer "feathers". The first Parker 21 Supers had in fact the Ridge clip but with the addition of the Parker 45-clip and an imprint. But soon the new clip was adopted to the line. Also in 1953 a Parker "21" desk pen was offered in black.