Apple II graphics tablet, need pen

["Mirko" <mirko@yack.com>]

I have an apple II graphics tablet, card and software, but I miss the pen.

I know where to connect coil and switch on the board since I have the 
schematic diagram of it, anyone out there knows the characteristics of the 
coil inside such a pen ? I mean, I could rebuild one if I knew copper size, 
diameter and number of windings required.

If someone out there with an electronics background can suggest how such a 
coil can be selfmade, here is a diagram of the tablet, the pen coil is 
attached to an operational aplifier LM733 : 
http://www.exosystem.it/apple2/graphics_tablet_schema.pdf

Thanks for help
Mirko


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