That is a cutie! Glad she was all cleaned up for you. 185 takes CLASS 66 bobbins.
(not affiliated with them...never purchased from them...only posted because it lists all the models the Class 66 bobbins can be used on)
I see that Joann's sells the plastic bobbins - I would stay with metal ones - even if you have to order them online or through ebay.
I see people selling machines craigslist and they don't even wipe the dust and dirt off them. . . and then they want LOTS of money for them. Those are the ones I pass on .