Lone Star.
1957 Malibu specifically. I provided these details on a Facebook post, but I'll be glad to do it again.
The giveaway for brand are the rocket nosepiece and the "Z-bar" power bar locking in the transom. You'll also notice the full length splash rails and their placement and angle. The curve and step of the transom top are also distinctive.
The model is defined by the side decking combined with the three benches. What's remarkable is the position of the control bracket on the middle bench. You're missing the original steering pods that were mounted fore of the bench. You'll also notice the absence of holes in the dash lending more credence to it's midship control station. It's a common scenario on the '57 Malibu hulls as many of the boats from this era have undergone the infamous sawzall treatment from cool runabout to common fishing boat. It's not the first '57 Malibu I've seen that has had this done.
1957 is the only year for this configuration.
If you want to get your tape out for confirmation, you should find a 14' length, a 61" beam, and a 52" transom width.
It's rated for 35hp, weighs 325lbs, and has a 6 person capacity.
In the following print, I've circled the distinctive nosepiece, the z-bar transom bar, and the location of the control bracket. The print is from the 1957 catalog.
To be fair, I may be wrong as I'm not always right and the LS serial format is a mystery to me, but it's not the first '57 Malibu I've seen.
For solid confirmation, take the pics to the *vintage* Lone Star facebook page and reach out to Josh Sanders. He's currently authoring a book on Lone Star history and is the serial format guru.