Giovanni Romanini - Mickey Mouse Lost in Space

Nice Mickey page by Romanini, who sadly passed away about 3 months ago.
In an over fifty years career, thanks to his eclectic talent and his neat style, he was able to draw almost every genre of comics. And so he spent four years working for Disney in the early '90s.
Any info about the publication of this page would be greatly appreciated, thanks!

(pen and ink on artboard, roughly 11"x 17" - signed and dated)

Click HERE to see all Romanini's art in my Gallery (some nudity)
And click HERE to see all Disney art in my Gallery

P.S. - It seems that no one Mickey story drawn by Romanini has ever been published. So this page might be a try-out or a personal work. In any case it's a very nice page, masterfully inked by Gio. I especially like the 5th panel :)
Many thanks to Ciro and Fabio for the hints!