Maybe you should go back and read Post 8 of that thread.
It doesn't keep any secrets.
Red5 nailed it in Post 7 and I came clean in 8
Catalog number, and even the mint markings of my LD are in the LDDB link provided.

And do you know what else? That ANH LD isn't so lonely anymore. It now has sequels sitting beside it, which I've received from eBay this past week, both also coming from the same Technidisc factory in the post-DC era, and without THX certification.
Haven't watched 'em yet -- we'll see if they're 'interesting' like the first one...