Yes, "E" for "Eb". But the interesting thing about this horn is the missing Ladyface engraving. I know that in the early 1930s the odd horn escaped its tattooing, but by 1946 ALL Conn saxes were being engraved. So what happened here ? Did it really just miss out on its engraving, or is it a relacq that was so heavily buffed that the engraving got worn away ?