It depends on the definition of collector. There are huge numbers of people in China who give and receive silver and gold Lunar coins for Chinese New Year. Many have a year-set collection, but they are not collectors of past years, nor of any other kind of coin. I hesitate to call them coin collectors, although they reliably collect Lunar coins. The number of people who collect Chinese Lunar coins from a numismatic standpoint is a smaller group, but they are there. Lunars are a big business for the latest coins (until the holiday) and a smaller one for past years.
Best wishes,
Peter Anthony
NGC Consultant China Pricepedia — Chinese Coin Prices and More
The Gold & Silver Panda Coin Buyer’s Guide 3 www.pandacollector.com