Identifying a refired porcelain sculpture requires a keen eye for subtle details. One of the most telling signs is changes in the glaze. Refiring often alters the original glaze's texture, creating inconsistencies such as bubbles, cracks, or an uneven sheen. Additionally, look for discoloration or patches where the glaze appears thicker or thinner than the surrounding areas.

Another indicator is the presence of kiln marks or stilting scars. Original porcelain pieces typically have minimal marks, while refired pieces may show additional blemishes from repeated kiln use. Pay attention to the foot of the sculpture, where excess glaze or rough edges might suggest a second firing.

The body of the porcelain can also reveal clues. Refiring may cause slight warping or shrinkage, altering the sculpture's original proportions. Compare the piece to known authentic examples to spot discrepancies. Lastly, advanced tools like UV light can detect modern restoration materials, which often fluoresce differently than original glazes.

By examining these factors—glaze anomalies, kiln marks, structural changes, and restoration traces—you can confidently determine whether a porcelain sculpture has been refired. This knowledge is invaluable for collectors and appraisers alike.