The Mystery of "Pattern Number 55" continues :: I found two pieces with this mysterious "55" number on it :::
I have a thread on here about "Pattern Number 55" just in case you are interested. My pieces did not match up to the "Pattern No. 55" which is shown on the big silver pattern website, they show a black-and-white photo from an old Gorham catalogue (i presume), but it doesn't look anything like my pieces, and it doesn't look anything like your piece. Your piece does look most similar to Hindoo, that's most certainly true.