Printed on a MK4 with the MMU3.
Mounted it with double sided tape.
"Ultra-strong Double Sided Adhesive Monster Tape Home Appliance Waterproof Wall Stickers Home Improvement Resistant Tapes"
https://www.aliexpress.com/item/1005006926453576.html?spm=a2g0o.order_list.order_list_main.41.74811802j8bdM9
The author marked this model as their own original creation.