Looks pretty complete from March, 1962 through April, 1985, save for the last issue of 1965 and most of 1966.  Not listed, but included in the collection are No. 25 (January 1960), No. 34 (July 1961), a special edition on the 356B, and four issues of the Porsche Owners Club Newsletter (May, June, August and December, 1962).