There were a great many models of Graphics produced from the early 1900's to the mid 1970's when Graflex ceased production. My Crown is a "Pacemaker" 4X5 model (they were also made in 3X4 and 2X3 formats) and has the 135mm Graflex Optar lens in a Graphex shutter by Wollensak.
The body is of hybrid construction: the lens bed, front standard, and focus racks are of metal and the body box is made of leatherette covered mahogany.
Being press cameras, both Crown and Speed Graphics have very limited movements: Rise and rearward tilt on the front standard. The bed can drop forward which will allow the user to emulate several camera movements such as front fall and forward tilt of the front standard. Because they were designed for use as hand held cameras, you really can't expect more movements than that! The bellows draw is limited, so lenses of longer than 6" usually aren't used for close-up work.
Any of the 4X5 sized Graphics are a good way to get a taste of large format photography, and make good field cameras for landscape work using lenses up to about 10" in focal length. Lenses as short as 90mm (the 90mm Graflex Optar is excellent) can be used without resorting to a recessed lens board. The 90mm lens will require the front bed to be in the dropped position so it is out of the lens' field of view.
Most Graphics feature a coupled rangefinder (Kalart is the most common) and all have ground glass focusing. A wire sports finder is incorporated in the front standard and is used with a folding rear peep sight. Tubular viewfinders with interchangeable masks for different focal lengths and or formats are often installed on the top of the body.
There were three types of backs installed on Graphics: The Graphic "spring" back, the Graflex back, and the Graflok back. Of these three, the Graflok is the preferred model as accessories such as roll film holders for 120 size film in various formats are readily available. 6X7 and 6X9 roll film holders are the most useful, though 6X6 and others are seen.