From left to right: Parker # 45 eyedropper, black hard rubber with corrugated mother of pearl barrel and Parker v v clip ( c.1905-1918) ; PARKER # 11 , eyedropper, Aluminum, black hard rubber taper cap ( c.1894 - 1905 ) ; PARKER # 11 ,eyedropper, spiralgold filled barrelwith black hard rubber taper cap ( c. 1894 - 1905 ) ; PARKER # 46 , eyedropper, fluted mother of pearl barrel with chased design gold filled taper cap ( c. 1905 - 1915 ).