antique mold markings

I have a porcelain fiqurine with young inc. on the bottom I cannot find any information on young inc and how old she might be help

multiple sclerosis

I have multiple sclerosis any one have it or know someone that does or just chat about it

i have an old john deere tractor collectible it is a tractor

i have an old john deere tractor collectible it is atractor
it is cast iron and very heavy any one know how i can tell how old it is and what it might be worth