In this page, I'm providing information that will be useful for a potential buyer.  Guided by an ethical principle of The Golden Rule, I'll tell you things I would want to know about a trailer before buying it.

I won't sell it immediately, instead I'll wait for awhile (probably at least one day) because at the beginning I won't know what “the best offer” will be.  I don't know what a reasonable price is, so I'll “let the market decide” by seeing what people think it's worth.

Basically, I think the trailer is in fairly good condition (although not perfect) on the inside & outside.  Personally, I would be willing to “live in it” for sleeping (and having my personal space) in a situation where I could use the toilet-etc of a house, because I'm well adapted for heat (in summer) and in SoCal the winter is ok with enough blankets.
 

As you can see below, the trailer has a license plate;  and it's been registered for 50 years (it has the yellow sticker for 2020) but there is no title-paper (like the “pink slip” of a car);  instead I will give you a bill of sale, and ASAP I'll notify DMV about the transfer of ownership.

It's fairly clean now, and with some work it could be much cleaner;  e.g. the contact paper is old and wrinkled, should be replaced.   There is some water damage in various places, as described with photos-and-words in this page.   All of the five side windows open & close easily.  I haven't been able to easily open the back window (by bed) but probably it's possible.

It has no toilet, shower, running water, heating, or air conditioning.  It does have hookups for electrical (that worked in the past although not now, but probably could be repaired and re-connected) and for propane.

It's a classic vintage trailer (check this cool photo), a 1955 Roadliner.  But this means it's old, and...

AFAIK it hasn't been “on the road” for decades, it has just been used for storing things.  The tires hold air, wheels roll, it has a standard 2" ball hitch;  August 7, it was towed a short distance (about 70 feet of driveway) at low speed.  I think you could successfully tow it from here to where you want it to be, but I offer no guarantees;  it will be sold as-is. 

To make it truly roadworthy – although this probably isn't your goal – would require some work (new tires, lubrication,...) if you want to move it around instead of just leaving it in one place for living in it.

Somehow the tire jack got lost, but it has strong metal frame-beams just before & after the tires (photos available soon), so a standard jack should work ok.

Here are some useful details:

The lock on its door has two keys that worked a couple of years ago, but for some reason they don't work now.  I've tried WD-40 but this doesn't fix the problem.  Therefore, you probably will want to find a locksmith who can install a new lock.