Operation Bravo Case 
The Bravo Collection and the Operation Bravo Case
The Bravo Collection dates from September 2013 and is a case collection from the early CS:GO years. Its skins come from the Operation Bravo Case, which the catalog lists with the same release date, and the collection is also tagged as an operation set.
All 15 skins are available in StatTrak™ versions. The ladder has four tiers: six Mil-Spec, four Restricted, three Classified and two Covert skins.
The two Covert skins are AK-47 | Fire Serpent and Desert Eagle | Golden Koi. Fire Serpent runs from 0.06 to 0.76, while Golden Koi is capped at 0.12, so it only comes in Factory New and Minimal Wear. The same 0.00–0.12 range applies to two of the three Classified skins, AWP | Graphite and P2000 | Ocean Foam; the third, P90 | Emerald Dragon, spans 0.06–0.52.
Narrow float limits are common here. M4A1-S | Bright Water starts at 0.10 and ends at 0.22, so it has no Factory New copies at all, and M4A4 | Zirka stops at 0.42. MAC-10 | Graven and USP-S | Overgrowth complete the Restricted tier.
Among the Mil-Spec skins, Nova | Tempest ends at 0.22 and UMP-45 | Bone Pile at 0.34, while Dual Berettas | Black Limba, G3SG1 | Demeter, Galil AR | Shattered and SG 553 | Wave Spray run from 0.06 to 0.80. Only the three skins capped at 0.12 can reach a 0.00 float; every other skin starts at 0.06 or higher.
By weapon type the set is rifle-heavy, with seven rifles, four pistols, three SMGs and one heavy weapon, Nova | Tempest.
The lowest current marketplace offer for AK-47 | Fire Serpent is $2 104.64 (Factory New); the Operation Bravo Case itself has its own page with live prices.