a 36 spoke wheel built on a Shimano hub is safe** ,, damage it on the road, and a shop in most of this country should have a spare to sell you to get you going again.
hand finished , wholesaler machine built . off the peg .. add about $100 labor for a hand built set


** odds are the drive train is Shimano .. Sun CR18 a decent rim for a good price..


If its old and 126 dropout frame this creates quick swap compatibility issues using 130 or 135 29er wheels