Please add punctuation to this: Lenses prisms mirrors and other optical elements mounted of any material for instruments or apparatus excl objective lenses for cameras projectors or photographic enlargers or reducers such elements of glass not optically worked and filters
Lenses, prisms, mirrors and other optical elements, mounted, of any material, for instruments or apparatus (excl. objective lenses for cameras, projectors or photographic enlargers or reducers, such elements of glass not optically worked, and filters)