The radiant time series (RTS) method is a new method, derived directly fiom the heat balance method, for performing. design cooling load calculations. It effectively replaces all other. simplified (non-heat-balance) methods such as the cooling load.
The last wheat pennies were made in 1958. They were produced from 1909 to 1958. They are generally common and worth a few cents above face value and can be found in pocket chaâ¦nge.
Although Lincoln Wheat pennies are ordinary, there are a few of them that are valuable. 1  Here you will find a list of rare wheat penny key dates, rarities and varieties for the Lincoln Wheat cent series. 2  Shop unique and authentic collectible coins including gold coins, silver coins, proof sets, US mint sets, and more.