is “the accepted rule that an authority created to perform a specific act or accomplish a particular result is terminated when the purpose which called it into being is achieved.” Hardy v. Davis, 223 Md. 229, 233, 164 A. 2d 281, 283 (1960), citing Mechem, Agency (2nd ed.), Secs. 552b, 553. See also One Twenty Realty Company, Inc. v. Baer, 260 Md. 400, 408, 272 A. 2d 377, 381-82 (1971). A new oral agency relationship was created when, at the meeting on March 17, 1973, Speert, on behalf of the appellee at the request of the appellants, agreed to “exert [his] best efforts to influence Suburban Trust Company to increase their commitment from $193,000 to some larger greater amount.”
Goldstein’s deposition offered by the appellee pursuant to Rule 413 a 2 was not limited to purposes of impeachment but was substantive evidence on behalf of the appellee. See Raleigh Mfrs., Inc. v. Cantela, 255 Md. 508, 258 A. 2d 403 (1969); Snowhite v. State ex rel. Tennant, 243 Md. 291, 221 A. 2d 342 (1966). In that deposition Goldstein acknowledged that even though he recognized that the 30-day period specified in the letter for obtaining the minimal commitment had expired, he did not expect that Speert was then going to “try to get more money” without the expectation of remuneration for such services, and that if Speert did obtain such an additional commitment he “would be paid pursuant to the original contract, which [was] $10,000.”
Notwithstanding the waiver of the obtention of the minimal mortgage commitment specified and the entitlement to the appellee of its fee upon that ground, it is clear that as of March 17, 1973, a new agency relationship was created and a new oral agreement was formed with Goldstein promising to pay the $10,000 fee to the appellee if Speert were successful in obtaining an increased loan commitment from Suburban. See Canaras v. Lift Truck Services, Inc., supra, at 346-47, 322 A. 2d at 871; Post v. Gillespie, 219 Md. 378, 384, 149 A. 2d 391, 395 (1959); Buffalo Steel Company v. Kirwan, 138 Md. 60, 64, 113 A. 628, 630 (1921).
As we construe it, when the trial court stated: “at which