Gamla TGOJ tjänstevagnar i Grängesberg (Fordon: vagnar)
Do you mean the waggon on the left in this link?
https://digitaltmuseum.se/021018334833/fran-vanster-den-tidigare-koping-hults-jarnvag-k...
I think it is fd KHJ 33. In 2008 two numbers could be seen: 33 and 9063.
I think that the waggon on the right is TGOJ 9163