There are 4 blanks. The tiles look to be made from bone and bamboo. Antique Mah-Jong Set. I don't know the age, other than it is old (Maybe 1920's??).
Vintage boxed mah-jong sets - price guide and values
Vintage boxed mah-jong sets - price guide and values
1920's Antique Mahjong Set with 145 Bone & Bamboo Tiles and Instruction Booklet
Bone and Bamboo Mahjong Tiles
Mahjong Set - 20 For Sale on 1stDibs antique mahjong sets, designer mahjong set, used mahjong sets for sale
Antique Mahjong Set - Singapore
Bone and Bamboo Mahjong Tiles
mahjong Auctions Prices
Vintage boxed mah-jong sets - price guide and values
Vintage 1920s bone and bamboo mahjong tiles. Wonderful one dot and phoenix one bamboo. The white dragon was newly carved, t…
VINTAGE 1920'S Mahjong Set Bone & Bamboo 152 Tiles & Sticks -Missing Front Door $129.99 - PicClick
Sold at Auction: VINTAGE BONE AND BAMBOO MAHJONG SET, CASE MEASURES 9.5in x 7in x 6in
Vintage Antique Chinese Bone Bamboo Mahjong Set Mah Jongg
BNB-003