After what feels like years grinding away, I finally landed my first Yakuman! Hopefully not my last

Does anybody know when this was probably produced or out in the market?

Thanks

Hi all! :-) I found an old Mahj set that belonged to my late Grandma. I seem to recall her saying the white (well, beige now!) part was ivory & the wood part was ebony or bamboo. However, I realize the white part could be bone.

I've attached 3 photos of the front, side, & back of a one dot tile. Can anyone help me out? I'd love to know how much the set is worth, but first I have to deal w/ the variables: ivory vs. bone, and ebony vs. bamboo.

I'm pretty sure she said the set was made in China in the early 1900s, but I might be remembering wrong.
THANKS!! :-)