This version of Sauro was released under the Philko license. The missing speech chip indicates a technical issue, likely affecting the game's sound effects and possibly dialogue.  Without further information, its gameplay and original developer remain uncertain, and the differences from a potentially original or standard version of Sauro is unclear. The Philko license clarifies only the distributor or publisher for this version of the arcade game.

Sauro (Philko license)

Saulabi Spirits / Jin Saulabi Tu Hon (Korean release of Samurai Shodown II, set 2)