It looks like a thingamajig. Used on a 3 point hitch to attach a whatyamacallit.
I am not certain what that "contraption" is. it might be part of some kind of implement.


Yup, that seems like the same hitchProprietary hitch for proprietary tillers that Kubota uses on rice farming countries like Vietnam, Taiwan, and so on. Proprietary hitches used to be quite common on those older grey market tractors. This quick hitch in particular, would most like work with another proprietary attachments.
Can be barely seen here (white thingy):
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