I looked at the post but it wasn't clear enough. I think the license to manufacture Deca switched to another company at some point in the last few years. If this was a few years earlier I would I would say that this Deca is 100% fake. The rounded corners would be a dead giveaway. Deca labels were square as a door frame. Now, I cannot be sure.
The numbers under the N.V Organon text on the vials are the license number and chemical code. The old one was "24119/310" = License#/Chemical#. If the license was changed either by renegotiation, new licensee or maybe if the same company re-upped I could see the 24119 number increasing (if they are doing the number serially) and maybe they have added some products causing the 310 to go to 331. I don't know. Being acquired by two companies in the last 5 or 6 years doesn't help things.
It is hard to tell but the pictures I have seen it looks like the 4 is closed like the one I just typed and the threes seem to be rounded at the top. (They are not like this on the box posted in the picture) The legit ones I've seen have the "3" and "4" on the vial exactly the same as the box. I can't tell from the photo if this is the case.
Again, I am not saying these are fake. I am not experienced enough to make that call. When I first cycled, human grade was pretty much all there was. UGLs were just starting. These decas were the most counterfeited and we stayed away since most were fake. The forums were littered with guides on how to spot them. I guess some things stuck in my head so seeing these again gave me pause.
Just wanted to point out what I saw and hopefully someone who knows this better than my decade old knowledge will show me my errors.
Thanks