file size: 2.21 MB, MIME type: image/jpeg) Description English: Preserved West Midlands PTE bus 4527 (reg. TOE 527N), a 1974 Volvo Ailsa B55 double-decker with Alexander AV bodywork, pictured at Showbus 2011 . WMPTE took delivery of 3 such vehicles in late 1974 for evaulation, numbered 4527 to 4529 (TOE 527-529N).