I saw this on an auction site so I took screenshots.  I've never seen a Gellman Polly curved adjustable.  Thus one is missing the lock screw.  Is this someone having fun with an old wrench or did Gellman actually make a curved adjustable?

I'm still looking for the rare double Torx. 

One end's for square nuts/bolts, and the other for hex.

I'm late to this topic by years but I was looking for more information on Double Ended Adjustable Wrenches and landed here.   I see all the comments and brands which is very interesting but to add a few cents to the conversation,  I believe Lakeside and Merit were actually made by Diamond. 

thx

-tx-

Hello, Al . You're welcome. Here is a photo of the cross reference chart for everyone else!