Back in 2013, we made a set called Olivetti. We used U9 and CP for the alpha base and V4 for the legends. With a member of the community, cmd, we are bringing this set back but we are now using L9 as the base for the alphas. CMD also decided to run the set using a Row 5, an 1800 layout, and other needed keys.
A similar set was produced by Olivetti, an Italian company who produces typewriters and mechanical keyboards. They used Cherry Molds to produce the keycaps for their Cherry board, but they are now some of the most sought after keycaps.
All keycaps are shown in the picture.