Old Box w/Old Paintings Almost Thrown Out! Help w/Signatures? Thoughts?

I have a friend who is the manager of a thrift store here in Miami, Fla. and if I get there early enough (usually 7:30 - they open at 9:00) and if they are unloading their trucks, he lets me go in & see/buy all the new stuff first.
There was a old cardboard box that one of the unloaders just tossed in the dumpster, but luckily I saw some rolled up canvases through one end that turned out to be the paintings below (plus the very cool Lotus-Ford 49 poster I posted yesterday asking for information on) - and ended up paying $90 for all of it. And even though I rescued it from being thrown away I didn't complain because I figured the Lotus-Ford poster was worth it alone & the paintings were just the cherry on the sundae (hopefully).
Thoughts on the paintings - are any of these good?
Can anyone help me with who the artists' were?
Thank you!
PS - 1st one below that is done in a dark tone; there were 2 more by the same artist & both also done in dark colors that I didn't buy, but instead I asked my friend to hold them for me until I could ask you guys here if they were by anyone known and/or worth anything - so fingers crossed someone here can help me with it!
Also the 2nd & 3rd paintings were done by the same artist and I did buy both of them because they had a MCM feel to them.
All photos were taken outside in the sunlight (they looked better - to me - when I first saw them in the store under reg lights?)



This was on the back of the nude painting above

 

Can anyone tell me anything about any of these artists?
Thank you

 

The first one appears to be signed Céu. The second Poucek. The third "Henry ______." They do appear to be mid-century but they could well be decorative paintings.

Debora