This came from the arcade-museum website, which isn't updated much!
It could be IGT but I'm not sure why it would have a Japan tag on it?? Can you post a shot of the inside?
Name: Draw Poker Royal Flush
Manufacturer: International Game Technology
Year: 1980 - 1989
Type: Slot Machine
Subtype: Video
Class: Concept, One-Off, or Hoax
Genre: Unknown
Monitor:
Orientation: Horizontal
Type: TV Monitor
CRT: Color
Gameplay: Single
Control Panel Layout: Single Player
Sound: Special Sound System
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Draw Poker Royal Flush Description
Draw Poker Royal Flush was produced by International Game Technology in 1980.
International Game Technology released 25 different machines in our database under this trade name, starting in 1978.
Other machines made by International Game Technology during the time period Draw Poker Royal Flush was produced include Draw 80 Poker, 7777, TV Dice, Players Edge Draw Poker, M-Slot, Big Red Keno, Draw Poker, and Twenty One.
royal flush draw pokervideo poker machine says...TABASY OR JABASY ON FRONT PANEL