I bought this set at a garage sale 30-35 years ago for $20 and had it on display on my desk for a year or two and put it away and forgot about it. I came across this set again a couple of weeks ago and did a search on the internet to see what value this beautiful set might have. I didn't find anything on this desk set. Is it rare? Is it valuable? How old is it? Any information would be very much appreicated.