Old Guitar - 3ds Max/Substance Painter.
High resolution and realtime version
PBR Metallic/Roughness workflow.
Rendered in Marmoset Toolbag.
High resolution version, created in 3ds Max and textured in Painter.
I optimized the completed high version to create a game ready version
Here is the link to the Andre Govia photo I used as reference for the guitar. --