Q: Enclosed is a picture of an antique chocolate set. We estimate its age to be about 90 years. It consists of a pot with six cups and saucers. It is marked "O.C. Co., -- Limoges -- Porcelain." I would appreciate any information you can give me.
A: Your chocolate set was made by the Ohio China Co. in East Liverpool, Ohio, about 1900. It would probably sell for $165 to $185 in an antique shop.
Q: This mark is on the bottom of a porcelain vase that I would like to have identified and evaluated. It is 10 inches high and decorated with green and purple grapes. The handles are coated with gold.
A: Your vase was made by the porcelain factory in Marktschwaben, Germany, during the early 1900s. The production of porcelain was terminated by World War II. Vases like this are selling for $65 to $75.
Q: Please tell me whatever you can about my prized cake plate. It is 10 inches in diameter and marked with an eagle over "C.T. -- Altwasser." It is beige and decorated with orchids.
A: Your cake plate was made by the Tielsch Co. in Altwasser, Germany, in the early 1900s. It would probably sell in an antique shop for $35 to $45.
Q: The mark on the bottom of my compote is a crown over the letter "S." It is about 12 inches tall and is formed by two cupids supporting the bowl. Can you tell me anything about its origin and value?
A: Your compote appears to have been made by the Sitzendorf porcelain factory in Germany. Since its value might be in excess of $500, I suggest you take it to a local museum for possible authentication.
Q: Please tell me whatever you can about the value of my porcelain figurine of a girl lifting a cat out of a basket. It is quite small, measuring about 4 inches by 4 inches and is marked with a castle with three towers and marked "B.& G."
A: Your little figurine was made by Bing & Grondahl in Copenhagen, Denmark. It probably dates back to the late 1800s and might sell for $225 to $235.
Q: My Dresden figurine is marked with a crown and the letter "N." It is a girl in a fancy blue dress with lots of white lace. Can you tell me how old it is and how much it is worth?
A: Dresden is a type of porcelain introduced by the German Royal Porcelain Manufactory during the 18th century. The term is used to apply to the work of many factories. The mark you describe was used by a factory in Sandizell, Germany. Your figurine would sell for about $125 to $135.
Q: I would appreciate your opinion of a porcelain vase. It is about 10 inches tall and has two handles. The decorations are pink and white flowers with green leaves. The mark on the bottom is an artist's palette with fancy scrollwork in a circle.
A: This mark was used by the Ceramic Art Co. in Trenton, N.J., from 1894 to 1906 on American Belleek porcelain. Your vase probably would sell for $500 to $600. The scrollwork reads "C.A. Co."
Q: We found a slot machine in our parents' attic. It takes nickels and is called "Golden Nugget." Can you give us some idea of its value and when it was made?
A: This was made by the Mills Manufacturing Co. in 1947 and modified by the Golden Nugget Casino. There also have been some reproductions made, so this should be examined by an expert. An original would be worth at least $3,000; a reproduction is worth about half as much.
Q: My grandfather's shaving mug has a picture of a farmer plowing a field with a team of horses. On the bottom is "K. T. & K. China." Is this collectible?
A: This would be classified as an occupational shaving mug; these are very popular with collectors. This one was made by Knowles, Taylor & Knowles in East Liverpool, Ohio, about the turn of the century. It would probably sell for about $125 to $135.
Send your questions about antiques with pic- ture(s), a detailed description, a stamped, self-addressed envelope and $1 per item to James G. McCollam, P.O. Box 1087, Notre Dame, Ind. 46556. All questions will be answered; published pictures cannot be returned. Mr. McCollam is a member of the Antique Appraisers Association of America.