1906 buick model f and g poster

This poster is advertising 2 buick cars model G and F. the top of it says HATS OFF TO THE BUICK AT ALCONQUIN. The Model G is a 2 cylinder 22 H.P for 1000, and the Mondel F is a 2 cylinder 22 H.P for 1250. it also says how the model g defeates certian cars and so does the model f. its from chicago branch, 142-1414 Michigan Avenue. it is in plastic and it has never been opened and i put the frame on it just to hang it. the last thing it says is how the buick model f beat the record from new york city to San Francisco. the date is 1906. i found it in an attic garage. i would also like to know the value