Pair of Antique German Bisque buying Porcelain Parlor Statues - "Grandma & Grandpa" (Heubach?)

This pair of bisque porcelain figures from Germany are labeled "Grandma" and "Grandpa". Each figurine is 6 1/2" tall. Both are wearing attached round metal glasses. Both figurines are decorated in shades of orange with golf cired accents. The "grandma" figure has the number 13 incised into the porcelain on the inside. The "grandpa" figure has the number 43 painted with the same ograne glaze as used on the figurine on the inside of the figure. They may be from the Heubach factory of Germany but I am not sure. They are of that quality. Both are in excellent condition. I would guess by the style of dress that they are very early 1900's. buying