We have sourced an original Time Module for the HP41C available at 150 € plus shipping. If bought together with a HP41CL he price is reduced by 30 € - please contact sales@thecalculatorstore.com to organize (there are two HP41CL left).
This time module comes with a user manual in French
There is as well a HP41CL based on version 3 of the circuit - it is sold at 470 €, with a discount of 140 € over the v4 (and latest) version.