This is a genuine Prestolite Field Coil.  Part # 20-535 (MFJ-1005AS-1).
Box style may vary.   

Fits motors MFJ-6305IA, MFJ-6306C, MFJ-6401K, MGA-4001
and MFJ-6101 (Chrysler marine inboard).

Will combine shipping with multiple purchases!  Will ship internationally using Ebay's Global Shipping Program.  Please note Ebay will charge and collect sales tax based on your state.