I have a wound 5th course string, so maybe this is a little off-topic
:).
Anyhow, my wound strings are darker by the rose where the right thumb
touches them. But they are lighter close to the 3rd and 4th frets,
where the left-hand fingers touch them.
Thumb and fingers get washed about the same,
Left hand presses the string against the fingerboard and into the fret,
seems to me that this makes for more wear than RH thumb/fingers can do.
--
Dana Emery
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