PUP trailer

I don't know the years but Coleman campers had problems with their ABS roofs for a time. Check those carefully. I always liked the Coleman campers. Before we owned a camper we rented them often and they were always Coleman campers. When we purchased our first camper it was a Starcraft RT10 which is the off-road version but they made same floor plan in standard version. We loved that thing and often wish we had it back. I guess long story long I would not look for specific brand. throughout the brands in a 10' box you can find floor plans very similar. I would be more concerned with the actual condition of each trailer I looked at and see how well it was taken care of. Leaving one outside for storage leaves a lot of room for things to get ruined.
Good Luck with your search
Ryan