Here are lots of gaming magazine scans which show the original version of Shinobi III.
ザ・スーパー・忍Ⅱ

ASM
(Issued 148, December 1992)


Beep! Mega Drive
(November 1992)


Beep! Mega Drive
(February 1993)


Computer & Video Giochi
(Issue 135, February 1993)


Diehard Gamefan
(Vol 1-4, February 1993)


Electronic Gaming Monthly
(Issue 41, December 1993)


GameFan
(Unknown date)


GamePro
(March 1993)


Gamers
(Issue 2, February 1993)


Joypad
(Issue 15, December 1992)


Hobby Consolas
(Issue 16, January 1993)


Mean Machines SEGA Catalogue
(1993)


Mega Drive Advanced Gaming
(Issue 6, February 1993)


Mega Force
(Issue 12, December 1992)


Mega Play
(February 1993)


SEGA Power
(Issue 40, March 1993)


SEGA UK budget games advertisement
(1993)


SEGA Zone
(Issue 7, February 1993)


Super Sonic
(Issue 7, February 1993)


Beep! Mega Drive
(October 1992)


Beep! Mega Drive
(December 1992)


Computer & Video Games
(Issue 135, February 1993)


Consoles +
(Issue 15, December 1992)


Electronic Gaming Monthly
(Issue 40, November 1992)


GameFan
(Issue 3, January 1993)


Game Power
(Issue 14, February 1993)


GamePro
(Issue 43, February 1993)


Gamers
(Issue 3, April 1993)


Joypad
(Issue 17, February 1993)


Mean Machines SEGA
(Issue 5, January 1993)


MEGA
(Issue 5, February 1993)


Mega Drive Fan
(Issue 14, February 1993)


Mega Play
(January 1993)


Mega Tech
(Issue 14, February 1993)


SEGA Pro
(Issue 17, March 1993)


SEGA Visions
(March 1993)


Sonic the Comic
(Issue 1, May 1993)


Tec Toy Shinobi III backcover
(1993)