Early SIPHON CHAMPAGNE TAP CORKSCREW..no makers marks.. Possibly pre prohibition...Screwed thru the cork into the bottle .. the little T-valve gradually released the pressure..then allowing to decant contents of bottle Measures 5 -3/8" long..screw tip to shoulder 2.75" ..shoulder to nozzle 2-5/8" Very good used condition..shows signs of age, storage..no breaks repairs..as found with original patina.. Not new. not reproduction..not mint..Nice vintage example with original patina..