Table:
text: NCC Class A1
Building and withdrawal data
Building and withdrawal data
Number_ Builder Built Rebuilt Name_as_rebuilt Scrapped_Sold
33 York Rd Cannot handle non-empty timestamp argument! 1902 Cannot handle non-empty timestamp argument! 1928 Binevanagh Cannot handle non-empty timestamp argument! 1949
34 York Rd Cannot handle non-empty timestamp argument! 1901 Cannot handle non-empty timestamp argument! 1928 Knocklayd Cannot handle non-empty timestamp argument! 1950
58 York Rd Cannot handle non-empty timestamp argument! 1907 Cannot handle non-empty timestamp argument! 1934 Lurigethan * Cannot handle non-empty timestamp argument! 1954
62 York Rd Cannot handle non-empty timestamp argument! 1903 Cannot handle non-empty timestamp argument! 1928 Slemish Cannot handle non-empty timestamp argument! 1954

text: NCC Class A1
Building and withdrawal data
Building and withdrawal data
Number_ Builder Built Rebuilt Name_as_rebuilt Scrapped_Sold
64 Derby Cannot handle non-empty timestamp argument! 1905 Cannot handle non-empty timestamp argument! 1929 Trostan Cannot handle non-empty timestamp argument! 1954
65 Derby Cannot handle non-empty timestamp argument! 1905 Cannot handle non-empty timestamp argument! 1929 Knockagh Cannot handle non-empty timestamp argument! 1950
66 Derby Cannot handle non-empty timestamp argument! 1905 Cannot handle non-empty timestamp argument! 1930 Ben Madigan Cannot handle non-empty timestamp argument! 1954
68 Derby Cannot handle non-empty timestamp argument! 1908 Cannot handle non-empty timestamp argument! 1927 Slieve Gallion Cannot handle non-empty timestamp argument! 1947

Question: What is the highest number listed in the NCC Class A1?