The "7" prefix in 7F75 means alarm clock. So they will have the alarm ring on the face. There is no need to install the alarm hand, but unless you make an effort to remove the paint for the alarm ring, it will be there. Don't underestimate the danger of the crumbly radium phosphor compound, nor overestimate its ability to glow. Do not inhale nor ingest the dust. Also, the zinc salts which comprise the phosphor tend to deteriorate with age and the phosphorescence is usually fairly weak.