5 x 5"
Thank you for contacting Mearto with your appraisal inquiry.
No one has identified this potter though there are other pieces by his hand - in slightly different styles - that have come on the market in the last 10 years, all at a fairly modest value. If yours did not have a hole in the bottom it would be worth more...
Based on the photos and information provided, and subject to examination, this is:
A vintage Italian sgraffito pottery bud vase
marked Italy / GT / NY below, 20th Century
Rolled lip, swirl-decorated body in red and blue with scrolled elements, signed below and drilled.
5 inches high, 5 inches diameter
*represents a fair-market value for auction purposes; retail or asking price may vary.