Hi, We have inherited many antiques and collectibles from Paul's mom who had an antique shop - and now we are trying to deal with all of the pieces. I am trying to figure out the value/history of a pretty porcelain tea set (a tall tea pot or coffee pot with a gold spout, and tea cups and saucers and a sugar bowl) with gold trim/plating and with red roses. Each saucer and cup are half gold plated or painted.The insignia of the maker is on the bottom - it says "Argosa Fine Porcelain". Does anyone know of this maker?