Anglo Saxon did not distinguish by voicing usually, particularly with the sounds /s~f~z~v/. After the adoptions of the Latin Alphabet letters "f" and "s" were doubled when representing a voiceless sound in the Wessex dialect's accent when it fell between two voiced sounds in the same syllable. That being said, are there any runic writings that attest to something similar them-in? or was this something that seems to have just been introduced by those who introduced the latin script?
*I am aware of the younger futhark introducing dots to distinguish voicing and I am aware of some anglo saxon rune sets introducing the letters kalk and gar to have runes that specifically only made the sounds /g/ and /k/.
Thanks in advance.