Osh Kosh coveralls with blanket liner, said to be from the 1930s I got it, but it could be from the 1940s. The stitching on the back and sleeves, which is generally triple stitched, is double stitched. There is no doubt that it is suitably old.
The difference in shrinkage between the denim fabric and the wool lining fabric on the back may have caused the hem to curl up.
Two smaller pockets on top and two larger pockets on the bottom, a common feature on coveralls. Composition. The denim fabric on the front is crumpled as it is pulled by the small, shrinking lining.
It has been fitted with a small pivoting button. You can also see that the sleeves are also double stitched.
There's no tag on the lining, so I can't tell what the material is, but it feels prickly to the touch, as if most of the fat has been removed from the wash.