When I got help for the setting of my wallet Multibit Classic in 2014 with the tech guy in the Vap cafe in London Shoreditch, he strongly insisted that all of us taking time to write carefully the 16 words that was generated and to keep them in a piece of paper safely.
I can only confirm that I used MultiBit Classic and that this crypto wallet did not have the option to backup through seed, but the only options were to copy the wallet file or to extract the private keys that the wallet generates and keep them safe. Is there any way to contact that man and try to find out exactly what those 16 words represent?