Smith Corona SD700 Spell Right Memory typewriter WORKS but broken Platen knob

Smith Corona Spell RIght Typewriter SD 700 - Parents got this for me when I started college - It at the time was state of the art (has memory where it can type by self items over and over) - used for my Potpourri business to type up the header cards. Not sure how but the platen knob got bumped off during a storage. :( I no longer use a typewriter and could use the room for storage. SELLING AT THE PARTS PRICE even though the electronics is working great - the PLATEN KNOB is BROKE off and is included but may be able to be repaired (NOT SURE) ... It includes all the things pictured which could even be sold seperately but wanted to put all together in case someone gets this up and going... Very well made - cost several hundred dollars in 1982 .. Message if you have questions. Very heavy due to being well made - will send the best pricing way and REFUND if postage is overestimated.