Can a judge be found to have mistakenly signed a judgment?

(Conservatorship of Tobias (1989) 208 Cal.App.3d 1031, 1035.) "Great weight should be placed on the trial court's declaration as to its intention in signing the judgment as the nature of the error is seldom clear from the record or other extrinsic evidence." (Ibid., citing Bowden v. Green (1982) 128 Cal.App.3d 65, 71 [whether the trial court "' inadvertently or by mistake signed findings or a judgment or order which he did not intend to constitute his decision'" is an issue "'of the judge's intent, and the best evidence is the judge's own statement, either express or implied from the order of correction'"].)