Following photos are of a Guider which I purchased a few months back and have been using since. The pen is made of Red colored acrylic. The section and feed are made of Ebonite and the filling system is ED.
The size of the pen is around 5 1/2 inches; a medium sized pen:

The clip has the name GUIDER imprinted in the fashion of vintage Parker clips:

The cap posts securely. The body shall be replaced by the manufacturer in case of any problems if a gold nib pen is purchased. Somewhat like a Life Time Guarantee(Cost of the bare pen is negligible compared to the gold nib).

The Nib imprint says GUIDER Pen, 14CT, S INDIA (South India):

A front view of the nib:

A closeup of the ebonite feed:

A closeup of the nib tip. The left hand side tipping has a blemish but the pen is super smooth with a good flow:

Overall the pen is good and is a nice example of an Indian handmade pen. This is the manufacturer's Website. I have no affilation with the company, just a happy customer.
Cheers,
Hari,
INDIA