(a)Filing.--An interested party whose vested right in property is adversely affected by the treasurer's sale may have 30 days in which to file an appeal with the court of common pleas contesting the regularity of the sale procedure. Service of the appeal shall be made on the treasurer simultaneously with the filing of the appeal.(b)Issues.--The appeal may question only the regularity of the proceedings of the treasurer's sale. It may not raise the legality of the taxes or the correctness of the amount of the claims for which the property was sold.(c)Time limits.--A hearing on the appeal shall be held within 20 days after its filing. Within ten days of the hearing, the court shall enter an order either upholding the regularity of the sale or requiring the property to be listed for the next treasurer's sale. 1984, Oct. 11, P.L. 876, No. 171, § 303, effective in 60 days.