Here are some picture of different 41 CPU. From what I remember, there was around 10 different one.
If you have picture of your 41 CPU that do not look like the one here, please upload it.
41C Two Transistor
41C Three Transistor
41C Final V1
41C Final V2
41CV Initial
41CV 1981
41CV 1983
41 CV-C combo - C version
41 CV-C combo - CV version
41 CX-CV-C combo C version
41 CX-CV-C combo CV version
41 CX-CV-C combo CX version