The John Greig-era squad picture can be seen in the background of a picture shared by the iconic designer as they promoted their autumn collection of clothes and accessories.
Sandy Jardine and Davie Cooper are among the other legends featured on a backdrop in Instgram pictures shared by Gucci.
The promotional pictures were shared on social media at the start of the month but were only noticed by eagle-eyed football fans over the weekend.
Rangers fans traced the picture back to a 1978-79 squad picture from a magazine.
One fan wrote on Twitter: “Even Gucci know it’s all about the Rangers! 78/79 Rangers squad photo can be seen in the ad.”
Another asked: “Lmao is that Rangers in the back of this Gucci ad?”