Counter-Strike: Global Offensive v.1.34.4.7 is like looking at a time capsule from late September 2014

4.3 Important Warnings

The Counter-Strike: Global Offensive (CS:GO) version 1.34.4.7 is a specific build often used in legacy or community-patched versions of the game. While CS:GO has been largely replaced by Counter-Strike 2, this version remains relevant for players who prefer the original mechanics or are using standalone "No-Steam" launchers. Core Version Features

Manually patched; often includes community "fixes" or built-in skin changers. Inventory

v1.34.4.7 No-Steam is a pirated, offline/LAN-only version of an older CS:GO build. It keeps core gameplay but removes all Steam features, official multiplayer, and anti-cheat.
Steam version of the same build is just a normal older CS:GO client (if you owned it before the CS2 transition, you can still download it via steam://nav/consoledownload_depot 730).