Celluloid collar

Celluloid collar

A detachable shirt collar made of Celluloid. Such a collar could be wiped clean with a damp rag and thus extend the time between shirt washings. The collar was held in place by being buttoned to the shirt.
References in classic literature ?
Before putting on his celluloid collar, he spat on it and smeared it off with the tail of his shirt.
The apparatus of sweatshops, mansions, pneumatic pipes, celluloid collars, and so on represented in a book is carefully examined and understood here as relevant to the book's theme.
Earlier, you could get celluloid collars which wiped clean.