The bobble part looks like it is attached with 2 sided tape - see pictures - this one the sticky is gone so it doesn't stick to the body. Can easily be replaced with a piece of new 2 sided tape. See other auctions for Lucy and Charlie Brown. It is a huge collection!
It may take me over a year to get it all listed. I try to describe what I can see but ask questions if you need more information. The item "RARE Peanuts Snoopy Bobblehead Japan Porcelain Baseball series Very Unique" is in sale since Thursday, November 29, 2018. This item is in the category "Collectibles\Animation Art & Characters\Animation Characters\Peanuts\Other Peanuts".
The seller is "jlbony" and is located in Akron, Ohio. This item can be shipped to United States, all countries in Europe, all countries in continental Asia, Canada, Mexico, Brazil, Australia.