Quick google search of the D00 number:
"I have three new never used Taiwan Type 65 Stainless Steel preban magazines. Two are still in the never-opened factory packaging and one is not.
I received three of these in identical packaging and only opened one bag, the other two should be identical with black followers as well. The three magazines were securely wrapped in the below packaging and unopened until I decided to open one. Each had a sticker on the plastic with "D00 000 90890". The opened mag has no markings except for a small "C" stamped near the base opposite of the rib (as seen in the pic below). I can include 3 green followers if you want for free...
These are some of the best SS preban magazines available. "