We’ve recently covered 145th anniversary limited edition releases from Seiko in the Presage and Astron collections, and I bet some of you have probably been wondering, “Hey, what a dive watch?” Seiko, of course, has not forgotten about the Prospex line when it comes to anniversary themed limited editions, and have recently announced the HBC005 and HBB001 in the same blue/silver colorway that is becoming the visual signature of this anniversary celebration.  First up is the HBC005, which is built on the platform of their current 62MAS inspired reissue. This heritage focused dive watch has its (modern) origins with watches like the SPB143 , but received a handful of small updates about two years ago to make it more wearable (and fix the somewhat awkward 3:00 date window for what I believe is a more under the radar 4:30 execution). The case comes in at 40mm in diameter and 13mm thick, with a lug to lug measurement of 46.4mm.…