DELTA The Pleasure of Writing 30th Anniversary Momo Yellow / Carbon - BallpointCarbon fiber, celluloid and nib in pure titanium: a creative mix and chromatic blend of extraordinary materials and innovative use of unusual shapes accomplished by both Momo design and Delta. It was in 1992 when Delta added a new page to the world's history in writing instruments. After doing research for 3 years on innovative materials that could be valuable to produce writing instruments Delta produced the first writing instruments in Titanium and