The numbers look larger than any Tokai S/N I have seen. Most Tokais also have Made in Japan on the back of the headstock.
Also, there is usually a small crescent shaped piece of maple showing between the binding and the mahogany back. The binding looks a little wider than usual as well.
The tried and true method to ID most Tokais, is, take the neck pickup out and there is usually the model number and colour written or stamped in ink.