Tektronix 4911 paper tape punch/reader

Has anyone ever seen either of these? They're introduced in the Tektronix catalog for 1973, pg. 277. I cannot find pictures of either of these peripherals in any catalog. The cassette drive appeared in only the 1973 catalog and the tape punch/reader appeared for only three years. Prices: 4911 4912 1973 $2950 $1950 1974 $2950 1975 $3295 I've collated together all the graphics/terminal products from the various Tektronix catalogs together into a single PDF file: <http://www.xmission.com/~legalize/vintage/docs/tektronix/Tektronix_Terminals_1969-1993.pdf> This includes the storage scope displays and related equipment, but omits all the oscilloscope, test equipment and microprocessor development system stuff. It does include the workstations, however.