HP-41 rom - AP550 A3 - 1 and 2 ?

[wallyt]

Thank you for your reply! I am not sure if what you suggest is true or not. The ROM itself is labeled as WPN EFFECTS and has part number printed on it (mentioned previously). This ROM actually was to be included in a different publication; it is the wrong ROM for this publication. I am looking for a ROM that might be labeled AIR BLAST which should have been included in this publication. I attached some photos of what I have. The overlay card that is in the photo is the correct one for the BLAST ROM and is quite different than the one for the WPN EFFECTS. Regards.