Looks like most of the new slip joint pliers are now riveted and not chrome plated.
I can't find a picture of Tekton pliers that does not have a rivet. I will see what these NOS Western Forge pliers are like and go from there.
I can only find pictures of one side of the WILDE slipjoints, but I can find pictures of the other side of their tongue & grooves and they have a nut.
I also found a very recent pair of their 8" slipjoints on Ebay and they had a nut.
You did actually order the WILDE from HJE right ?
If so I will be very surprised if they don't turn out to have a nut.