@eobox91103 oh, thanks: this is an online resource I wasn't aware of; I'll make good use of it, yup 
Regarding serial numbers, I'm hoping someone else can offer some advice. I use Wayback Machine, but the URLs for many models are unreachable.
@tnar yes, thanks to you too. I know IAFD and already use it, but unfortunately, it's very incomplete. For releases from those years, the films are listed, not individual videos or photo sessions.
They should hire more people with OCD about nitpicking like me, lol!
!
) in 2013, but I wasn't registered at the time and the reverse search on Google and Tineye never gave any convincing results. I'm very interested in this video! Thank you.