MP-732CV1-SL is quite common (and old)... search here:
http://www.s1mp3.org/en/downloads_fw.php
Could you post a picture of the display part# and measure the dimensions of the viewable area? I know of CM50010 (1.5",128x128,NT7571) and CM50010ACT6 (1.8",128x160,HDC1600).