IC Nails have many variations. From 1923 to 1927 the Nails are copper Indent. An exception is the IC27 Cast Iron. There is also a 1926 Cast Iron, believed to be a factory sample. The 1922 and 1923 are Target Dates with several variations and/or sizes. The 1924 comes in Target, PotBelly and the Tall (or Thin) Variation. If you look at the Target Dates closely, you will notice the Target is actually the Initials of the Company. The Steel Dates run from 1928 thru 1942 and are all raised. IC Nails can be found in poles and Ties. International Creosote had 3 plants one in Texarkana, Beaumont and Galveston. Click on the Nail to see an Ad for IC.