Is this Sub a steal? or a canal street knockoff?

[Hugo_Weaving]

Hello Gentleman, I found myself perusing the facebook market before bed as I usually do and I came upon this sub with a price that was too good to be true. I am well aware of the old addage of things that are too good to be true, however I couldn't resist and I sent the seller a message. So this young man informed me that his grandfather had passed and he was left this watch. I am by no means a watch expert but something does seem a little off about this sub. My odd feeling about the watch coupled with the fact that it is on facebook market led me to ask when it was purchased. The seller says he has no clue, so I inquire about the warranty card and it is blank in the places that count. I would certainly like to own a classic sub if it is genuine, but because of my limited knowledge I thought I would present the facts here. I felt it would be best to seek counsel and get some expert opinions. I will include pictures, all opinions (postive and negative ) and perspectives appreciated and welcomed! Thank You all in advance


Hopefully I posted these photos correctly.