How do I find private phone number of a seller when I won the auction and its cash on pickup?

[bigbrickshop]

Have you already made pickup arrangements? If not, you can contact the seller by email first.

In the Purchase section of your My eBay to the right of the item details, click on More Actions and select Contact Seller.

[kopenhagen5]

As said, send a message to arrange a time first.

If no response in 2-3 days you can get their details in advanced search.