Olivetti ET 201, ET 221 Ink Ribbon | Typewriters.com
Olivetti Ribbon - Etsy
Olivetti Lettera 32 Vintage Typewriter New Ribbon Black & - Etsy
Amazon.com: Inkvo Twin Spool Typewriter Ribbon - Combo Pack - Red and Black Ink - Fresh Ink Replacement - Compatible with Smith Corona, Royal, Remmington, Underwood, Brother, Olivetti, Olympia, Adler and More : Office Products