I've been searching this hallmark for a while and haven't found anything. The Brand is Porcelana ngi, or hgi. It's a tea set I inherited, it belonged to grandma, she died in 1975 so it must be previous. I like it very much and I'd like to know about the Brand. I'm in Mexico, the hallmark is in spanish, I guess it could be mexican. (?). I'd really appreciate your help.
Regards.