Here's a fun pair of work wear salesman sample denim jeans. Dating 1930's, maybe earlier or somewhat later.  Doubt any later than the early 1940's.  This great pair of vintage jeans was found in Ohio! 

 Jeans have no label, tag or such, so here's the particulars.  The color of the fabric is blue with a gray-tone.  White thread stitching.   Buckle back fastening with a black metal buckle (no markings).  One patch pocket on the back.  Front features slash pockets on either side.  Sewn fly.  Attached to either side of the waist are suspender fabric.  Each in a different color and print. (for choices)  A metal tab with black button is attached to show how they would be attached. 

Condition is clean and perfect. 

Size of the sample is 14-1/4" long.  Waist is 8-3/4" across the front.