The physical appearance of a Duck House doll, as well as the logo and collector numbers stamped on the back of the doll’s neck, are used to determine its value. Each doll should also have an authenticity certificate.
The logo for Duck House Corporation is a feather with the company’s name written over the bottom third of the feather. Under the logo are the words Heirloom Dolls and two numbers separated by a slash. Three or four digits before the forward slash, followed by four digits afterward. Collectors once believed that these numbers indicated the doll’s identity, but it has been discovered that they describe the sequence of numbers associated with distinct doll designs. In other words, 001/5,000 indicates that the doll was the first of 5,000 identical dolls to be manufactured. The smaller the number in the first set of digits, the greater the likelihood that collectors will value the doll.
The authenticity certificate is crucial for determining the price of the doll. Each certificate certifies that the doll is a genuine Duck House Doll. It includes the doll’s name and the sequence number that corresponds to the number on the doll’s neck. Each certificate is signed by the Vice President of Duck House Dolls, Mei Lien Chang. Without a certificate, the value of the doll is greatly diminished.