Red Jade Sitting Horse Sculptures

According to the inscription on the wooden base provided for each of these two marvelous red jade horses, this set of sculptures is "10/592" cast.  The pair of horses rests in a satin-padded case, blue silk on the outside with ivory clasps.  Each horse is about 5" long and 3" in height, weighing in at a little over a lb.  Each horse also comes with its own individual wooden base, with gold pattern detail on the side.  The bases are both inscribed with the casting information as well as the artist's signature, which is rather illegible.  The only clear letter in the signature is the first initial, a letter "G."  Currently seeking more information, if anyone is familiar with either the sculpture or its artists.  This pair of sculptures was received as a gift nearly 30 years ago and has been kept in excellent condition since.