Appear to be New old stock, NOS,  I believe these exhaust tail pipe chrome extension tips are original aftermarket parts.  Came from an old hot rodders estate, but he also was employed at Oldsmobile and Mopar in his career as a designer, so they may be OEM, just not sure. Nice custom accessory  hot rod shop speed shop old school parts. I have uploaded 24 photos.  They would look cool on a 1949 1950 1951 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 cars, possibly the Oldsmobile, Cadillac, Buick, Pontiac, Dodge, Plymouth, Desoto..  CONDITION - PLEASE SEE ALL 15 PHOTOS UPLOADED, THESE APPEAR TO NOT HAVE BEEN MOUNTED, BUT THEY DO SHOW SOME AGING TO THE CHROME in some areas, NO BLISTERING, BUT SOME CHROME AGING SPECS, TARNISH IN SOME AREAS, ETC., TYPICAL AFTERMARKET PLATING FROM BACK IN THE DAY, SO NOT MINT.