Unfortunately, you'll mostly be able to get reproductions (China) from vendors and online sites. Try April's 30 shop for original parts. If the original parts are important to you, be prepared for the sticker shock. Even repros. are very expensive. The bobbin case and bobbin assembly are the "heart" of the machine and the parts that are the most often pilfered and the most expensive to replace! The bobbin case is used on the 301 also, so they're in demand. I've purchased parts via ebay sellers(originals) and have been pleased. This may take a while. I would imagine you're going to have to spend at least $100 to get those parts. Probably more.