Always noticed this whenever I got the Essex Model 07 since it got added in Season 4 of Black ops 6. I assume that the essex may be using the SP-R 208 as a base/reused code from it.
Steps to reproduce is easy, the SP-R 208 is always guaranteed to appear in the box just before it settles on the essex model 07.
I have even talked about it before here, finally came around to record it before Black Ops 7 drops in a few days.