The text said it was superseeded by the dc505A in 1976. This does not match with: sale from 1976 to 1981. greetings Rubasch (talk) 10:17, 15 February 2024 (PST)
The DC505 is only in the 1974 and 1975 catalogs. I adjusted the dates in the DC505 page. Thanks for catching this error. Kurt (talk) 14:15, 15 February 2024 (PST)