As a clairification the Blues90 and Bluesbird90 have a lot of similarity. The Blues90 is a Westerly made guitar and the Bluesbird90 is Corona made. The Blues90 has a slightly deeper body than the Bluesbird90, both have nice chunky necks but the Blues90 has a plain neck with dot fret markers and no neck binding where as the Bluesbird90 has neck binding and block fret markers. Both have similar pickups.
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