def METHOD_NAME(obj: Any) -> Any:
    """Removes the PUA data type marker and leaves the correctly serialized type representation. Unmarked values are returned as-is."""
    if isinstance(obj, str) and len(obj) > 1:
        c = ord(obj[0]) - 0xF026
        # decode only the PUA space defined in DECODERS
        if c >=0 and c <= PUA_CHARACTER_MAX:
            return obj[1:]
    return obj