From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Table of specifications for New Phantom models in the U.S.A., listing chassis numbers, body weights, passenger capacity, and spring data.
| Identifier | ExFiles\Box 72\2\ scan0074 | |
| Date | 7th May 1928 guessed | |
| NEW PHANTOMCodename for PHANTOM IS IN U.S.A. X8991 Chassis No. Body Weight No.of Passengers. SPRINGS. O.S.front. N.S.front. O.S.rear NS{Norman Scott} rear 12MC 11½ cwts. 4 1165 1115 2328 2235 16MC 12 cwts. 3.4 1156 1100 2300 2204 23MC 13.14 cwts. 6/7 1260 1206 2524 2418 56MC 13.14 cwts. 4.5 1256 1200 2500 2400 110MC 12 cwts, 3.4 1200 1150 2306 2200 8 10½ cwts. 5 Av.2. 1207 1158 2292 2190 96HC 13.14 cwts. 6 Av.4 1310 1250 2576 2485 11LC 10 cwts. 6 Av.4 1215 1165 2320 2204 61LC 13.14 cwts 5 Av.3 1213 1155 2200 2100 68LC 8.9 cwts. 3 Av.2 1206 1100 2044 1942 69LC 8.9 cwts. 4 Av.2 1215 1165 2016 1918 70LC 13 cwts. 4 Av.3 1200 1150 2212 2107 75LC 11 cwts. 3.4 1162 1100 2120 2016 4SC 12 cwts. 4 1193 1145 2184 2072 96SC 10.11 cwts. 4 1158 1107 2128 2030 33DC 10 cwts. 4 Av.2 1148 1100 2047 1948 47DC 9 cwts. 5 Av.3 1145 1095 2026 1927 48DC 14 cwts. 4 1207 1156 2316 2224 54DC 14 cwts. 4 1200 1150 2280 2184 58DC 14 cwts. 4 1204 1150 2300 2208 66DC 14 cwts 4 1212 1162 2290 2194 73DC 9 cwts. 4 Av.2 1100 1050 1904 1773 | ||