Stock Scamp would have had a Scamp name & tree decal on the back center, the curb side above the belly band between the window and door. And on the street side in about same location.
Scamp still sells the decals and it sounds like someone went a little nuts if you have them all over the inside. Scamp also sells the pin stripes and Scamp lettering.
I liked them so I replaced the worn outside decals to look original. Another factor is the FG gel coat under the decal is permanently going to have a "shadow" of the decal due to decades of having the sun exposure blocked by the decal.
3M Stripe eraser from auto parts store will get those decals off the FG fast. Ordered decals from Scamp then paid a little over $100 to have someone re-do the decals that actually knows how. I saved some money by doing a very thorough prep cleaning so they did not have to charge me for that.
Photo shows street side and rear. Curb side is about the same decal location as street side. I found a picture of the original and on those the stripes connected to the S of Scamp, later years I think they had a space between the stripe and S.
It is your trailer but you own one of the old classics. Don't know if you risk the wrath of the FG camper gods by removing them but at that age the right to be badged with the three trees of honor left, right and to the rear has been earned. Not sure about the fridge
and cupboards that seems almost like sacrilege.