Columbia Tandem bicycles, there are basically two categories I will use to identify them, antique and modern. The antique were made from 1887 to 1899 and the modern from 1961 to 1991. The following pictures and descriptions are all from Columbia Catalogs and I will let them speak for themselves.  One thing I will add is the serial numbers on the modern Tandems do not seem to correlate to the posted serial number charts for 1961 to 1972. I have no explination for this other than these were extremely limited production bikes and the company did not seem to keep good records. My hopes are that visual identification can be made by the pictures from the catalogs and narrow down any search for year identity of one’s tandem bike.  Here it is and good luck.

Here are the Antique Columbia Tandems;

1887....The first Columbia Tandem was an adult tricycle.

tandem/1887_1.jpg

1889....The first "Safety" Columbia Tandem.

tandem/1889_1st_safety_tandem.jpg

1890....

tandem/1890_1.jpg

1895....The Model 43 Men's / Ladies is introduced.

tandem/1895_1.jpg

1896....A Men's / Men's is added to the Model 43 line.

tandem/1896_1.jpg

1897....Models 47 and 48 are introduced.

tandem/1897_1.jpg

1898....

tandem/1898_3__1_.jpg

1899....

tandem/1899.jpg

The following are the Modern Columbia Tandems;

1961....

tandem/1961_1.jpg

1962....Now officially called the "Twosome".

tandem/1962.jpg

1963....

tandem/1963.jpg

1964....

tandem/1964.jpg

1965....

tandem/1965.jpg

1966....

tandem/1966_1.jpg

1967....

tandem/1967.jpg

1968....

tandem/1968.jpg

1969....

tandem/1969.jpg

1970....

tandem/1970_1.jpg

1971....

tandem/1971.jpg

1972....

tandem/1972_1.jpg

1973....

tandem/1973_1.jpg

1974....

tandem/1974.jpg

1975....

tandem/1975.jpg

1976....

tandem/1976.jpg

1977....

tandem/1977.jpg

1978....

tandem/1978.jpg

1979....

tandem/1979.jpg

1980....

tandem/1980.jpg

1981....

tandem/1981.jpg

1982....

tandem/1982.jpg

1983....

tandem/1983.jpg

1984....

tandem/1984.jpg

1985....The only year a Tandem is badged with the "Classic by Columbia" name badge.

tandem/1985_classic_-_1.jpg

1988....The "Double Eagles" are introduced.

tandem/1988_double_eagle.jpg

tandem/1988_double_eagle_5.jpg

1989....

tandem/1989_double_eagle.jpg

tandem/1989_double_eagle_5.jpg

1990....

tandem/1990.jpg

1991....The last year a Columbia Tandem is produced.

tandem/1991_Columbia_4_-_2_ATB.jpg

tandem/1991_double_eagle_5.jpg

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