| Imperial has been produced since the 1960's with an extensive line
of pieces making it hard to catalog. I have attempted to follow the F
series Imperial here and leaving other pieces in the novelty and misc
catalogs. (If the piece is numbered with an F or a B or an A before the
number then it should be tagged as an Imperial piece. This is not saying
all pieces will be marked with the letter before the number.
Another thing to look at with Imperial pieces is the changing of
numbers on pieces not renewed for the next year. Example would be F25
which shows up on more than one pattern from one year to the next.
Always keep in mind even if you have a piece of Hull Imperial the
value in most cases will not be much above ten to twenty dollars for the
piece if that much.