This may not be an original complete set. There appears to be a slight variation in the colour of the specula. The largest is quite definitely brown. The other three appear black at certain angles. Some difficulty was experienced fitting the smallest speculum into the nest.A set (nest) of four brown bakelite speculums in graded sizes.dilatation

https://books.google.com.au/books?id=T6KmcBlF-xUC&pg=PA690&lpg=PA690&dq=surgeon+delaborde&source=bl&ots=ArCFo00eC8&sig=ACfU3U2nixrI1ZiM4k-ZuBhDe6d-yReQ5w&hl=en&sa=X&ved=2ahUKEwj93Oq6z_PpAhV8wTgGHbSDCurved tip retractorsurgical instrument, surgery, laryngology, laborde