Ok, I am looking at the old scanned pdf of my copy (the actual hard copy is packed away), and mine does not say edition anything that I can find anywhere. I'll try and remember which box I packed it away in when I had to store everything. I seem to remember seeing it not too long ago when I was in the storage unit looking for something. It's one of the few Traveller books I've manage to hang on too in hard copy. Most of my others have disappeared over the years thanks to friends walking off with them when I am not looking and an ex who had no concept of taking care of stuff. (Attidude being it can always just be replaced.)

Here is a link to a screen shot of the upper section of the first page in my pdf.

https://cdn.pximg.xyz/966db7bb1c96c20f5862f99229fe7cc9.png