TURBOBOB
The ALASKA BEEP diesel roadNUMBERs 1803/1804 were made in 2004. The 03 on every BEEP railroad name refers to 2003 the year of RMT's beginning. Every railroad's first painted version had a prototypical roadNUMBER that ended in 03 or at least 3 whenever possible.
A second run of ALASKA BEEPs was made in 2005 and were numbered 1805/1806 only as a continuation of the starting roadnumber of 1803. It was only a coincidence that 1805/1806 were manufactured in 2005.
Hope this helps.
Susie
***********************************************************************