My mom recently gave my brother two fountain pens she used back in her school days, one which was identifiable as a Hero 261. The other is a Golden Star pen, which I've seen mentioned a few times on this forum, but the exact model is uncertain and I was wondering if anyone could help. It's bladder fill (I think? I've only used converters up until this point so this is new to me) and is virtually unmarked except for the english words GOLDEN STAR printed around the cap and the chinese characters for golden star (jinxing) on the inside metal part. The nib is similarly unmarked except for a square with a four-petaled flower design.