Best of luck finding your new lid, Tony!
One word of caution, some members have reported minute size differences between MWF bowls, even insinuating they could be hand made.
Because of those subtle differences, it's very likely your new lid may not fit on your existing bowl. Check out this post for an example.
Brian | Rumple-smooth-skin
Try some Krazy Glue
Bob Dylan Salutes the 2013 Sabbatical Members
I did the same thing. I glued it back together and it's still going :) Luckily, mine only broke into three pieces, though. Good luck finding a lid!
I would also first try a DIY repair. Crazy glue applied to both surfaces very sparingly and then pressed together. Gorilla glue needs clamping and in this case it might be difficult. The expansion of the urethane type glue indeed fills the gaps but excess will look pretty ugly and I'm not sure if trimming it off is possible w/o damaging the writing on the top side.
BOBN - Founder of the BROTHERHOOD OF BRUSH NERDS