Thank you for viewing. - Brand: DYNAMO - Models: DY01, DY02, DY03A, DY04 E string: Carbon steel A string: Aluminum wound D string: Silver wound G string: Silver wound I purchased these new and used them for about 5 minutes of testing. The D string is silver wound, and while it was used and stored in the same way and cleaned as the G string, it has a slight tarnish that the G string does not. We look forward to your purchase if you understand that these are used items.