Condition: 
The pen is in overall very good condition with various tones of gray, and an interesting "snakeskin" pattern, there are no cracks or personalizations.   The barrel and cap have minor surface scratches.  The barrel imprint is clear and readable, as shown.  The clip is firm and in nice condition. The ribbed cap jewel is nice with no chips.  The pen has been cleaned, a new ink sac installed, it has been water tested, and it's ready to use.
 
Restoration Work
The cap has been brush cleaned 
Nib unit has been ultrasonically cleaned
New ink sac installed with 100% medical grade talc
The pen has been lightly polished
The pen has been water tested 
This pen is ready to use