Modern Library info, please? - Treasure Island

Hi,
My dust jacket lists to #133 (Bierce - In the Midst of Life)
published in 1927. Would that mean this copy of Treasure Island
published in 1927?
Back of dust jacket says "The Modern Library . Inc . New York/
In Canada . The Macmillan Company of Canada . Ltd . Toronto". Do all
the old dust jackets say that or just ones there were being exported
to Canada? Back also says "A New Title on the 25th of Every Month"
- is that true? Common?
Any rough idea of value for Treasure Island, Binding #4, dust
jacket missing small pieces bottom edge, not a 1st?
Thanks for any help