Section 293. Recording of conveyances heretofore acknowledged or proved

A
  conveyance of real property, within the state, heretofore executed,  and
  heretofore  acknowledged  or proved, and certified, so as to be entitled
  to be read in evidence, or recorded, under the laws in force at the time
  when so acknowledged or proved, but  which  has  not  been  recorded  is
  entitled  to  be  read in evidence, and recorded in the same manner, and
  with the like effect, as  if  this  chapter  had  not  been  passed.  If
  heretofore executed, but not proved or acknowledged, it may be proved or
  acknowledged  in  the  same manner as conveyances hereafter executed and
  with like effect.