Has anyone heard of Noble Ryder scotch?

I obtained a full bottle of something called Noble Ryder scotch whisky. The bottle is very old, I would estimate at least 40 years minimum. There is no date on the bottle, but it has an IRS label across the cork top. It says on the bottle that it was blended and bottled in Glasgow, Scotland, by a company called Distillers Exporters LTD. It is a 4/5th of a quart in size, and matured 8 years. I am assuming that it is some low-grade stuff, but am not sure. Has anyone ever heard of this stuff? I did a Google search, and there are zero references to it on the Internet. I would be interested if anyone has any information on this. Thanks.