Kiddushin 48 - First Day of Sukkot/ Shabbat September 30, 15 Tishrei

The Gemara continues with suggestions by quoting tannaitic sources that Rav's statement that a man cannot betroth a woman by canceling a loan is a tannaitic debate. However, each source can be explained in several different ways, showing that the tannaitic debate in the source is not necessarily about the issue that Rav was discussing. If one betrothed woman and said with what item he was betrothing her and it turned out it was not what he said, is the betrothal effective? Does it depend on what item was stated and what item was actually used?