I have listed on eBay my 1970s partially working Erika 155 typewriter. The typewriter is in good cosmetic condition and the keys work fine and the carriage advances fine but the bell does not ding at the end of your margin and it just abruptly stops. Please read the description on the eBay listing for more.
eBay Listing: https://www.ebay.co.uk/itm/304926878697?hash=item46ff0eebe9:g:q7gAAOSwj55kVpks&amdata=enc%3AAQAIAAAAwDMmNJnwArP9l0KnSG%2FsPeWzc9S6NksQDCXt6