த் டெக்கன் பென் ஸ்டோர்ஸ்‌ கிரீன் லெண்ட்

This place had left me amazed, the first time I came here.
More than what the name says, these people have an unparalleled collection of pens (all sorts that one can imagine and beyond that). The range (wrt price) starts from 10 to Lakhs of Rupees.
The best thing is that the people over here are very friendly and cater the customers with interest, in the process introducing the history of this chain of shops (set up in pre-independence times) and all.
A place of its kind - worthy to make a visit to this place, in Hyd.