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I found a company that shows to actually have only one of these coils available. This company handles obsolete parts. I will attach a link for you.
The part numbers for the coil you are needing for your Pioneer P39CB are 476339. However, Poulan bought out the company, and the Pioneer part numbers superseded to Poulan part numbers. The new part numbers are 507476339. Just add 507 in the beginning of your part numbers.
I will attach a link to the company who shows to have one in stock. Click on the link I am attaching for you, to open up the company information.
Company Information - Click Here
I would like to suggest that you contact this company as soon as possible. This could possibly be the last know P39CB coil on earth at the moment.
Also, click on the follow image link. For future references, use the poulan part numbers when searching for a coil. We can continue from here. Thanks!