Black 55cm 2003. The price ask is steep IMO, but to your point it seems like a "forever bike" once you build it how you want it. $800 for frameset - although it's pretty minty, the price is steeeep. I see a complete 2003 black 58cm (ending in 3h) for $800 on ebay, then a frameset for 600/800. So hard to gauge since it's a complete seller's market for the early Concepts.