I've been looking for a Bridgestone RB-1 for the last month but haven't found one that fell within my budget. Luckily, in my research I came across this bike as a possible substitute. With even more luck, I found this Panasonic at a local bike swap. I believe it's a 56, even though it was listed as a 54, I would have preferred a 53 but the price was right and I'm sure I can make it work (size wise).