mechanical pencils, pens, and parts (Central Square, Cambridge)

I have two mechanical pencils, as well as blue leads for mechanical pencils and replaceable erasers. (I don't know if the leads will fit these pencils.)

As well, I have a number of parts for Platinum Preppy pens: nibs, bodies and two Platinum converters. The pens themselves have gotten clogged up and I soaking has not helped, perhaps because they need a formula made from distilled water.

I also may have an unopened set of cheap black technical pens (Sakura or similar) as well as a pen body which can you can use a pen refill with. (I'll show you the link.)

Note that I will take down this post once I have a taken. Please don't ask if I still have these things! If you can see this post, then I do.

Location: intersection of Harvard Street and Bigelow Street.