`   Yes, it appears so.  The 4 stud front Wobbly Webs suggest this is a 23 or a 23B, but the difference between these two models (additional structural steel pipes on the sides of the 23B cockpit) cannot be seen in the photo.  Driver-side-only roll bar made with very thin (probably 1`` diameter) pipes were retrofitted to many 23s, but the roll bar shown in the picture is clearly different, and the lack of a windshield wiper shows the extent of the restoration.     `