Red and black mottled hard rubber,eyedropper Parker pens

Red and black mottled hard rubber are in my humble opinion one of the more beautiful materials used in the manufacture of vintage fountain pens.
As other pen makers of it's time Parker used this type of material almost since the beginning of their fountain pen production,creating some, now amazing,collectible fountain pens.
Along my 25 years collecting I was lucky to find the group of pens I'm sharing today with all of you.

From left:
#026,#023 hexagonal,#020 with a VV Parker clip,##20 and #018.
Number zero before the size number means that they are jointless models.

From left:
#28,#26,#25 with a VV Parker clip,#24 and a #10

From left:
#20,#20,#18 with a VV Parker clip,#18 with a disappearing clip and another #18

Three "turban cap top":
#20 long,#23 and #25

From left:
two unnumbered very early pens,two #1 taper cap and another #1 but straight cap
.