Restoring A Federal Pen: Anyone Know This Brand?

[Sailor Kenshin]

Does anyone know about this brand? It's a real beater I picked up at a pen show; note the gap between section and barrel. But the nib seems nice enough (reads Velvetouch 14K Gold Plate), and I want this to be my first attempt at restoration. Going to try fabricating a knockout block as well.

 

What size sac might this take? The body is thickish.

 

Clip:

 

http://extras.ourpatioparty.com/files/6514/8104/2148/Federal_Pen_-_Clip-640p.jpg

 

 

Nib:

 

http://extras.ourpatioparty.com/files/5314/8104/2150/Federal_Pen_-_Nib-640p.jpg

 

Thanks!