Oscar Schmidt guitars were made in many different sizes, from many different woods and they made guitars in many different styles.
The most common size is the standard size. Often this size is called concert size too. Those guitars have a width from 12,5'' to 13,5'' across the lower bout. Most common is 13'' to 13,5''. The scale length is around 25''. Early models often have a 24'' scale.
The next larger model is the grand concert size. The lower bout usually measures from 14'' to 14,75'', the scale lenght from 25,5'' to 26,5''.
The largest size is the jumbo or auditorium size with a lower bout width up to 15,75''. The scale lenght is around 26,5'' usually.
For the back and sides they used birch, cherry, maple, oak, koa, mahagoni and rosewood. The tops were made from birch, spruce, koa or mahagoni
Many different kinds of woods were used to built Stellas. Many are all birch guitars, this means the top, back and the sides were made from birchwood. Cherry wood was sometimes used too
Others have a spruce top with birch back and sides. Mid range and upper range Stellas often have spruce tops with oak or mahagonie back and sides.
Some guitars have back and sides made of maple with a spruce top.
Many of the Hawaiin guitars were made from Koa.
For the neck they often used poplar, higher end models often have a mahagoni neck. Most fingerboards werde made from woods , like birch or maple and are stained to black, higer end models have ebony or rosewood fretboards. Fancy inlaid fretboards, like the "Tree of life" fretboard , are usually a veneer of ebony and some sort of a bright wood, probably maple.
Schmidt guitars are well build instruments made from solid woods.Almost all Schmidt guitars have ladder braced tops.To be continued...