First Period Black Mark 1863-1890
The colour of the mark during this period was predominantly black but other colours were used, amongst them red, blue, orange, green, brown, and pink. Some pieces of Belleek also carry the British Patent Office registation mark which gives the date of regsistration, not the date the piece was manufactured. During this period Belleek also used impressed mark, with the words "BELLEEK,CO. FERMANAGH" or "BELLEEK", or a small impressed mark of a harp or harp and crown. The latter are more usually found on Earthenware pieces.
Second Black Mark 1891-1926
On occasions, particularly on Trays, both 1st and 2nd period marks can be found. Usually the 1st period mark is an impressed mark with a large 2nd period (black) mark. This leads me to believe that the large 2nd period marks were used on the earlier pieces and that later versions were scaled down.
Third Black Mark 1926-1946
First Green or Fourth Mark 1946-1955
Second Green or Fifth Mark 1955-1965
Compare this with the fourth mark. It is exactly the same apart from the registration mark - a small (R) above the banner. This (R) is a very useful pointer - any piece of Belleek, including baskets, which have this letter are POST 1955.
Third Green or Sixth Mark 1965-1981
First Gold or Seventh Mark 1981-1992
Sometimes people get confused and think that this mark is a "faded" Black mark - if the (R) is above the harp it is seventh mark.
The current mark is Blue
Much small than other marks.