This prospectus for the Northern School of Music has a different cover than other of its time. Most are NSM green but this a silver-grey. Could it be different to mark it's golden anniversary (gold binding is pretty hard to come by!)? Could it be simply a case that the printers ran out of NSM green? Could it be a mix up? Who knows!
Date is approximate
Part of the #NSM2020 project "A 20/20 Legacy: the centenary of the Northern School of Music" supported by the National Lottery Heritage Fund.