Recently purchased older 4625-- silver foil serial/model # label is BLANK ! ! Must have been wiped with cleaner/solvent, numbers completely gone. Seems to me that there MUST be a location on the machine where the serial/model would be STAMPED into the steel, so as not to rely on ink on a foil sticky label. Have asked the local dealer service mgr, service manual only indicates the foil label location. Nobody knows. Please help, Thanks, Art Young 717-648-3070