6" x 3" Antique pottery goose bowl, head upside down, triangle mark , please help with ID

[laurajeanjellybean]

I have a goose bowl 6 inches by 3 inches high. 

It was a incised triangle mark with an x inside, other characters I can not make out. 

It is signed T.G or F.G

Does anyone know what this is?triangle markgoose pottery gold trim