I don't know exactly how long it's been going on before i Noticed but...
The silver bonus boxes award the exact same thing every week. Both the 3 win and the 6 win silver boxes award 2 points to SE shorts and 10 to the Top Golf glove.'
The gold box for 9 wins is the same each week too. Points are split between SE legs and top golf glove again and then Foxwind shoes which is the same also.
Anyway at this point they are fairly worthless unless you just like the pittance of coins they award once you are maxed on those items.