Teddy Bear Factories such as Steiff and Merrythought have done this with great success particularly since the 1980s.
Often these Bears commemorate an important Date such as the Steiff Titanic Bear and Coronation Bears.
Auction sites tend to be rife with reproductions and inexperienced dealers wrongly attributing the age and make of a vintage bear so are often a case of buyer beware.
For example one only has to browse the pages of certain auction sites to see a vast amount of rather dubious bears attributed to Steiff.
After the material shortages of the Second World War, Teddy Bear manufacturers looked towards alternative materials such as Acrylic, Polymethyl Methacrylate which is a synthetically produced fibre used in Dralon and particularly upholstery and curtain fabrics, due to its soft and warm quality.