Lumar was a company in the UK that produced yo-yos since the 30's. Lumar produced many tin models, and later plastic. This is one of the more unusual models, and the age is a best guess. And it is wood.
A complicated name for sure ... Genuine Lumar Deluxe 99 Champion Yo-Yo Junior Express Competion Model. Wow, what a mouthful. Very interesting wooden model, with a paper printed sticker for logo.