Hullo everybody,
To me, it looks more a pedang than a golok. For instance, the handle is too impractical for a golok . If it were indeed Soenda, then the handle would normally be buffalo horn including its natural hollow. (The construction of the scabbard would've helped in the identification somewhat.
)
As deciding whether an item is a golok or a pedang can be quite a subjective thing, it can be difficult without actually handling the item.
At this stage, I'd venture it to be a Pedang Abet Sintoeng.
Best,