Josef Seibel Pippa 29 Black Nesty Oil Leather Ballerina Flats Size 6 to 6.5 US

New with box. Possibly tried on but not worn. JOSEF SEIBEL shoes are sized according to the European size standard. To help determine the proper fit, see the chart for reference in the pictures. I listed this as a 6.5 US. But the brands website say an EU 37 is equal to a US 6 to 6.5. My wife wears a 6.5 and the shoes fit her well but all feet are different.