Hi welcome to the arena!
I know approx 4 words in Japanese but somehow the word for Pony is not among them, hm...
Wow three tubs of childhood ponies Yaaay! So wonderful! If you'd like to share pics of them we'd love to see them in Pony Brag forum, and all those restoration etc tips are in Pony Corral. Feel free to post any specific questions you might have. (oh yes fardreamer and her mlppreservationproject.com I think it is are also great resources!)
Please have a look around, and make yourself at home! We're so happy to have you with us. Hope you have a great time!