Noted Toixala or Tonala Mes, #337. 3 1/2" high by 5" long by 3" wide.
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Tonala Mexican pottery is quite collectible, though the current market is not what it used to be, with small pieces - such as yours - bringing very modest prices at auction these days and even large pieces rarely selling for more than $150-200.
Based on the photos and information provided, and subject to examination, this is:
A Tonala painted earthenware pottery cat
Made in Mexico, 20th Century
with blue and green hand-painted decoration, the underside marked 'CAT / TONALA MEX / 337'
3 1/2" high by 5" long by 3" wide
*represents a fair-market value for auction purposes; retail or asking price may vary.
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