¶1dissent and vote to reverse in a memorandum by Mercure, J. Mercure, J. (dissenting). We respectfully dissent. In our view, claimant’s rather uncertain testimony that she received the decision on or about August 22, 1986 and the date stamp of "AUG 14 1986” on the ALJ decision were, viewing the record as a whole, insufficient to support the Board’s factual determination that the decision was mailed on August 14,1986.
¶2Notwithstanding the clear direction of the Board’s notice of hearing that the case preparation unit of the Department of Labor "[pjroduce a witness with first hand knowledge as to the *868practices and procedures involved in the mailing and filing of [ALJ] decisions”, claimant was the only witness to offer testimony at the hearing. After being told that the decision was dated August 14, 1986, a Thursday, she testified, "Thursday, Okay. I received it that following Friday, I think. Yeah. It was about the following Friday. It was a week later.” Claimant was not asked and therefore had no opportunity to state whether she knew the date upon which the decision arrived at her parents’ home or how long it remained there prior to its delivery to her. She did testify, however, that her father was employed at the Rochester City Zoo, that he would bring her mail to work with him and she would pick it up there. Claimant testified further that there was never any length of time that she did not get her mail. This testimony, as supportive of a finding that the decision was mailed on August 21, 1986 as on August 14, 1986, lacks probative value on the issue of the date of mailing, although, as properly found by the majority, it does establish the fact of mailing.
¶3The ultimate issue, then, is whether, given the fact of mailing, the date stamp on the ALJ decision, by itself, constituted sufficient evidentiary support for the Board’s finding that August 14, 1986 was the date of mailing. We would answer the question in the negative. First, we disagree with the majority’s determination that the sole purpose for proof regarding the practices and procedures involved in mailing ALJ decisions is to establish the presumption of receipt or, conversely, of mailing. In our view, a date stamp that is insufficient to establish that the decision was mailed in the first instance (see, Matter of Gonzalez [Ross], 47 NY2d 922, 923) cannot supply a rational basis for the Board’s finding of mailing on a particular date. In Matter of Lebron (Ross) (72 AD2d 886), this court found that the Board’s determination of untimeliness could not stand absent proof "to indicate when the contested referee’s decision was mailed or delivered to [the claimant]” (supra [emphasis supplied], citing Matter of Gonzalez [Ross], supra). Second, examination of the copy of the ALT decision actually mailed to claimant shows that the mailing and filing date had been stamped on the original decision before it was mailed or filed, evidencing the intention of some unknown person and not memorializing an accomplished fact.
¶4Although our review of factual determinations of administrative agencies is very limited, we should remain mindful that we exercise "a genuine judicial function” and are not to "confirm a determination simply because it was made by such *869an agency” (300 Gramatan Ave. Assocs. v State Div. of Human Rights, 45 NY2d 176, 181). For these reasons, we would reverse and remit the matter to the Board for further proceedings to consider the merits underlying the claim of entitlement to unemployment insurance benefits.