A vintage white 100% cotton marcella waistcoat with the honeycomb pattern.  These vest fronts were worn with a tailcoat for formal evening wear.  This one is single breasted with three mother of pearl stud buttons - these buttons can be removed for dry cleaning or washing.  It has a pointed edge collar.  This waistcoat has a white cotton back strap which fastens with metal buckle.  
Size is small chest size 36 inches.  Length from shoulder to hem 17 1/2 inches.  
In good clean condition suitable for formal evening wear.  The back strap has been extended by adding some extra pieces of fabric.   
I have several more of these waistcoats to be added later today.  Always happy to combine potsge fees where I can to save you money on the postage.