Opinion by

Tbe County of Bradford bas appealed from an order of tbe Court of Common Pleas sustaining an appeal from tbe decision of tbe Board of Assessment and Revision of Taxes fixing tbe assessed valuation of certain real estate in Towanda Borough, known as tbe “Mercur Block,” at $22,500 for tbe tax year 1946.

Tbe court found tbe fair market value of the property to be $35,000, but fixed tbe assessed valuation at $17,500, or 50% of its actual value, in order to bring it in line “with other assessments in tbe county.”

Had the evidence supported appellees’ contention of a fixed ratio of assessment at 50% of market value uniformly applied throughout tbe taxing district, there would have been justification for tbe learned court’s finding. “The principle of uniformity is the guide post pointing the way for tbe local assessor .... and for the courts in making such orders and decrees as may seem equitable and just on appeal”: Lehigh & Wilkes-Barre Coal Co. v. Luzerne County, 225 Pa. 267, 270, 74 A. 67. See also Mineral Railroad & Mining Co. v. Northumberland County Commrs. (No. 1), 229 Pa. 436, 78 A. 991; Allentown’s Appeals, 147 Pa. Superior Ct. 385, 24 A. 2d 109. But as we said in Phinney v. Board of Revision, etc., 161 Pa. Superior Ct. 101, 53 A. 2d 889, speaking through Judge Hirt, page 105:

“. . . to reduce an assessment of land below its actual value in. tbe interest of equality, there must be proof by a preponderating weight of tbe evidence óf a fixed ratio, of assessment of lands, to market value, uniformly applied throughout tbe taxing district. That proof is lacking in this case.”

*304 That proof is also lacking in the case now before us. Witnesses for the appellees testified to the assessed value of twelve properties, claimed to be comparable to the Mereur Block, but in nine of them there was no evidence of market value and therefore no basis afforded for ascertaining the ratio of assessed to actual value. Of the remaining properties the evidence tended to establish that in one case the ratio was 14%, in another less than 10%, and in the third approximately 35%.

As stated in the Phinney case, supra, pages 105-106:

“Manifestly all that this testimony tended to establish was an utter lack of uniformity in the assessments . . . This testimony, if valid, certainly presented a field for tax equalization by the board of revision of taxes (on the authority of Article XXY, section 2516 of the Act of June 23, 1931, P. L. 932, 53 PS 12198-2516) but did not supply a basis for reduction of the assessments questioned by these appeals. . . . Assessments may be reduced in the interest of equality by virtue of the mandate of the constitution only upon proof of a uniform standard of valuation of general application throughout the taxing district. Mineral R. & M. Co. v. Commrs. (No. 1), 229 Pa. 436, 78 A. 991. In the absence of such proof in this case the standard of actual or market value obtains.”

In the present case appellees iu their appeal to the Court of Common Pleas stated “That your petitioners after investigation believe that assessments in the business district of Towanda Borough are predicated on fifty per cent (50%) of market value of property, . . .” Their proof failed to show a uniform standard of assessed valuation at 50% of. market value, or anything approaching it or a prevailing custom of fixing assessed valuation on that basis or any other uniform basis. The testimony being insufficient to establish that a ratio of , assessed value to actual value was applied generally throughout the district, actual value is conclusive. The presumption is that the assessor performed his duty and that in com *305 pliance with the law he assessed the land at its actual value. There being no direct evidence that the assessor of this property, or any of the other assessors, either individually or collectively, assessed .properties throughout the district on a percentage basis, the property owner must be held to have failed to rebut the presumption that the property was assessed,at its.actual value.

The order of the lower court fixing the amount of the assessment at 50% of the actual value is reversed and the assessment at $22,500 is reinstated.