This is a Parker repeating mechanical pencil.
The cap ring is nicely decorated, making it look like a Duofold-style pencil. It might be a Slimfold.
It appears black in the image, but the color is actually blue.
Parker has many types and subspecies, making it a collector's nightmare.( > _ > ;)
<About the item>
This is from my grandfather's collection.
I inherited it, but I don't collect many imported items, so I'm going to sell it as part of a clean-up.
I have many other overseas pens like this, so I plan to list them gradually when I have time.
Feel free to check back whenever you feel like it.
<Condition>
There are signs of use.