Best Price on Seiko Alpinist SPB121: A Buyer's Guide The Seiko Alpinist SPB121 is one of the most sought-after pieces in Seiko's modern catalog, blending vintage mountaineering heritage with a movement and build quality that punches well above its price class. If you're hunting for the best price on the SPB121, this guide breaks down what the watch offers, what it typically costs, and how to...