Value and Age of a Vintage Folding Camp Table?

I believe this Wayne MFG Co was a small business that maybe made these outfits and perhaps other similar wood products as there is no mention of this company even in the St.Louis, MO archives (that I could find). The only mention of this exact name was in a book and the indication was referring to 'washing machines'.

I have some small companies in my area that make items and use a stencil like this to put their name on the pieces.

I can tell you that it was made after 10/1963 as that is the date the post office started using 2 letters for state abbreviations.

Value? Anybody's guess as there will not be anything to compare it with. There are vintage camp/camping tables and also similar chairs so you might research some of those (only sold pieces will give you a value) to come up with an approximate 'value'
Items like this are kinda like the products placed at the end of retail store aisles and in the check-out lane - called impulse buying - so almost any reasonable figure may be doable.
Didn't you buy this set on 'impulse buying' as I'm sure you were not shopping for a set like this.

I think it's possible the chairs were made by a different company and placed with the table and chairs will be more plentiful to find than an exact table. (Unless the chairs have the same marking?)
They are unusual as most folding chairs do not have the slates in the back like yours.

It's also possible the table was made as a portable work table and someone is calling it a "camp' table.

Considering it could have been used in the 30s-60s there were a lot of uses for a folding work table.

I do not know what you paid for your set but most likely I would have bought it if it was in my neighborhood.

Hopefully another member will check in and provide more details for your set.