Winston brand Japanese guitars imported by Buegeleisen and Jacobson. [Source: Vintage Guitar Magazine Price Guide]
To be more precise – Winston was a brand name of Kent Musical Products, which itself was a subsidiary of Buegeleisen and Jacobson, Inc. [Source: Drowninginguitars]
There are some claims that Winston guitars were made by Guyatone – but this does not appear to be the case. Guyatone have no record of this. [Source: Nate DeMont 21/2/2014] In fact Drowninginguitars suggests that they were made by Kawai.