This 1930s sheet of 4 metal hair curlers with a picture of. beautifully curled young lady, states
" Dampen hair - roll to scalp - close and lock wire frame. To remove - unlock and withdraw. DO NOT unroll"
All the cards show some signs of age, some more than others, see the last 2 pictures for the condition of these cards, so I've divided them in to 2 price bands
1. Better cards, with rust free rollers.
2.More age damaged cards with rollers that have bits of rust. Rust can easily be cleaned from metal with special rust remover, or plain old coke (google it !)