Looking for (specs for) bridge pickup in Jan Akkerman model.

[Dutch]

Hello,

I am looking for a bridge (Bill Lawrence) pickup for my Framus Jan Akkerman.
The one in my guitar gave up on me.
Does anyone have one for sale or know where to find one?
If I can't find a proper replacement I may have to have the pickup rewound. Does anyone have the specs like impedance, number of windings etc.?
There is a Bill Larence pickup out of a Framus Nashville that I can buy, but I read that the pickups in the Akkerman guitars had special specs. Any comments on that?

Thank in advance,

Gerard
Netherlands