Wait a minute! The cars shipped from China on 1/28 are the PS-2's, the two bay shorties from the 1950's and 1960's. The 4750's were announced on June 28, 2007 and arrived at shops in December, with another batch due this July. Oddly, Atlas shows them available in BN, DME, NOKL, and Union Equity but does not show exactly when they arrived.
Too modern for me, so I can't tell you what they look like.