[gfirob]

I have a round-hole L-4 from (I think) 1937. The original tuners functioned, but they are just old worn out tuners with a low tuning ratio. Any modern tuner will be a huge improvement and these guitars are not museum pieces anyway, they are meant to be played. I put butterbean tuners on mine and they look great. You will feel as if you have a new guitar when you put those new tuners on it.