First off, welcome!
The VIN you posted appears to indicate it is an 1986 model. I am not the VIN wizard, club member Sunline Fan is our Guru on that.
Did you paint the camper white or did you get it that way? Only reason for asking is, the original color and decals also helps us back into a year sometimes. If you have any of the before painted pics, that could help confirm too.
Did you get a title on the camper? It should have the date. I am not totally sure truck campers get titles as they have no wheels to go on the road, but it is worth a look if you have one.
Sorry I am not close enough on the truck campers on their cost value. It looks like you found a gem though.
Happy camping when you can get out in it.
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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