On sale is a rare and precious SONY Optical Twin Link Cable SOC-10 (length of cable excluding the two ends would be approximately 1 metre) Made In Japan. The wordings "Made In Japan" remains clearly printed and the name speaks for itself!
I have tested this cable on my CD player SONY CDP-R1 and SONY D/A Converter DAS-R1 and it works perfectly operationally. I do have another non-original optical cable as spare and on comparison with this original cable, the latter offers an extremely rich atmospheric playback sound!
Note: Regarding sound quality, I do not have the equipment to measure accurate numerical values with professional measuring instruments.
Given its age and is an used item, scratches and stains are unavoidable. No returns given its age. The description is subjective, please consider this as a reference.