English Concertina Box in Buy & Sell Posted 5 hours ago By far, the best type of case for a concertina that I've found is to buy and upper-end camera bag. They are fully padded and have hand and shoulder straps and an inch or more of foam padding around all sides. My Aeola when flying to the pavement once from 5'ft up out of my hands. It rolled harmlessly to a stop with out damage or a sound. Try that with a wooden or leather original case.