Any Erector Set Gurus Here?

I have at least 3 very old erector sets kicking around my shop. I do not know if they are 100% complete and doubt it. Three vintage boxes and a bunch of bits though.

I have no need for them and want to sell the lot but have no clue what they are worth.

I will have to get a couple pics.

Anyone into this stuff?

I was mistaken I have 4 sets but one is missing the lid:

Hi preach (fs)

I have no idea what the sets are "worth" but erector sets have a big value to my family.

My dad grew up poor but one year (1945ish) he received a brand new, top of the line set for Christmas which formed a very important memory for him.

It's still on display in his home and although he played with it constantly, it's in near perfect condition.    

My brother and I "played" with a fairly large set for several years, circa early 1970's.  We build a lot of cool stuff.  Those look older than that?

ebay would be the best reference for assigning a value, IMO.

Holy doodle!!

The steam engine set took me right back to my childhood!

A little history here:  https://www.collectorsweekly.com/toys/erector-sets

I had no idea the sets went back as far as 1913.