Old thread, but here is more info on 94AEs in .375 win. They were introduced in the 1983 catalog, shown in 84, 85 and 86 catalogs ... however, the highest Serial number I have seen on a angle eject 375 win is AE23100 which was a 94AE XTR .375 Win Mark Twain Sesquicentennial 1835-1985 Model. Outside of these 150 commemorative 375s, the highest angle eject 94 375 rifle I have seen was Serial number AE22060, and it was not checkered (that no checkering syncs with the description in the 1985 catalog).
I have recorded 63 serial numbers on AE-prefix 94AE 375s, 307s, and 356s (22 of those are .375 Wins). I have never seen a 94AE 375 without the AE prefix. Also, every AE prefix I have seen had the Monte Carlo stock.
I have recorded another 97 307s and 356s without the AE prefix. The 1986 catalog states that all 94 chamberings were now angle eject ... and I believe this is when they dropped the AE prefix on the 307s and 356s and merged the 307 and 356 serial numbers into the overall 94 non-prefixed serial numbers.