Hello friends today I will show how create stock vector illustration treasure chest images.
I have used following techniques shown below in this 3ds max tutorial.

[1]-Choose the rectangle and create rectangle with the following size
     Now place like this

[2]-Convert the rectangle into the editable spline now select the vertexes
     Now apply the fillet 24.0 approx   

[3]-Your object should like this

[4]-This time apply the extrude modifier with the amount of 94.5

[5]-Create one more copy and use the rendering setting now place like me

[6]-Create one more copy and place like me

[7]-Create line with the four corner like this

[8]-Use the rendering setting now create some line like me

[9]-Set the lock like me

[10]-Make the materials like me

[11]-Now this is my final image