Welcome from the Florida Panhandle
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Regarding the title issue, I would require the present owner to obtain a current valid title. If he had had the trailer for 15 years he should be able to do this. Depending on the state, obtaining a title can be a real hassle. If the current owner wants to sell this trailer other than for scrap, he needs to go through the title thing.
SuEllyn & Brian McCabe
WBCCI #3628 -- AIR #14872 -- TAC #FL-7
2015 FC 25' FB (Lucy) with HAHA
2005 Suburban 2500 Quadrasteer (Olivia) & 2011 Silverado 3500 (Fred) with Outfitter Truck Camper (Ethel)