I dont think it would be on the tongue. Many spartans are tilt trailers and they are replacable. I have a spartan too and I cant recall ever seeing the serial numbers.
Carry On Trailer Vin Number
Vintage Camper Serial Number Lookup
Or ever looking for them. If I run across them, I will let you know.If there was a previous license plate for the trailer, or previous registration, the serial numbers should be on there. Otherwise, call a dealer that handles spartan and they may be able to help you. I think Hannay in Minneapolis used to deal with spartan. They still might. Could it be more difficult to find trophy class fish due to fish surveys being so readily available in the past decade?
Spartan Trailer Vin Number Location
Just a thought. My main feature I am looking for is little pressure. There are a handful of lakes I will hopefully try this summer which have no boat ramps and I have to walk a mile through the woods to get to which have lake depth. Feature 2, fish surveys showing a descent predator prey balance. When I search the lake name and cant find barely anything about it on this forum, theres a descent chance these remote lakes hold some dandies. When it comes to trophy gills, perch, crappie; I bet you not easy acces to the lake increases your odds IN GENERAL; obviously other factors are in play and already discussed here.Hopefully, my assumptions are right this summer. And yeah I'm already gameplanning open water.