This is a new improved replacement XV750 Virago IGNITION CONTROL TCI ( otherwise known as a CDI Unit or Ignitor) which has been discontinued by Yamaha.
The original ignition number may have been stamped on it J4T032 ( years 1991, 1992, 1993, 1994, 1995, 1996, 1997)
The new replacement ignition unit larger and will mount differently than the original part. ( See photo of orange part below)
This unit has some improvements over the stock unit: