I ve gotten myself the same bongo . (almost ,
Its being kept for me i ve made a down payment )And collect it in november after my holiday !
It looks exactly the same as this one . The shopkeeper says its 5/6 years old .
It dous not have the raul mark . But other than that its exactly the same as this one .
Same wood same dimensions same hardware.The same stamp on the heads.
Anyone can sheare a light on this one ?
( First time in life i wished my f#cking holiday is over fast )

As far a backing plates .I think backing plates ar a must !!!!
I ve made them myself for all of my bongo s out of 1.5mm thick steel .( a bit oversized )
I ve hammered the steel on a kettle shaped wooden mold .
Its a slight curve but worth the work . The conform exactly.
Drilled holes, then hardened them myself .
Maybe a bit overdone but , nothing but the best for my love !!!!