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Introduction:
In 1965 Pilot reduced the price of Capless pens even more by introducing yet another model. This was a much simpler pen initially aimed at the student market. These series of models were made of aluminum, and the nibs, at first, were made of steel. On this model, the opening of the pen, to release and fill the nib unit, is done by removing the push button. This design feature makes this pen particularly light.
On top, the long C-100RW model. On bottom, the shorter (and more common) CS-100RW.
The more luxurious CS-200RW, released in October of 1965. Its main characteristics are the 14 K gold nib and the gold plated clip.
Features:
Dimensions:
Nib unit:
Type III. In steel and in 14 K gold. There are two main variations, IIIa and IIIb. The second of them, however, shows many small variations that will be labeled as IIIb.1, IIIb.2 and IIIb.3. On these IIIb units, the final push button is perfectly interchangeable among them. That is not the case with unit type IIIa, whose push button only fits that type. For more information, check the pictures and their captions. 14 K gold nibs are only implemented on IIIb types. All the nibs can be used in all the pens with the only caveat of the use of the appropriate tail for type IIIa nibs.
On top, the type IIIa nib; on bottom, type IIIb.1. Note the plastic notch on the first. The notch is metallic on all type IIIb nibs. The way the nib units fits into the push buttton aldo differs on these two general types IIIa and IIIb.
On top, the type IIIa nib. On bottom, a IIIb.
From top to bottom, types IIIa, IIIb.1, IIIb.2 and IIIb.3. The differences among these last three types lay on the metal notch and the ring on that same area.
On top, type IIIb.2; on bottom, IIIb.1. There is no ring on the IIIb.1. On IIIb.2 the ring is cut to avoid the guiding notch.
Type IIIb.3. The notch is on top of the ring.
Additional data.
These pens were made in a very wide number of colors. There also exists a clipless demonstrator version of the short model (either CS-100RW or CS-200RW) that was never for sale.
Nibs and bodies are engraved with the production place and date.
CS-100RW and CS-200RW in assorted colors, including a demonstrator unit.
Three variations of the CS-200RW.
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