No, the Canon PowerShot V1 is not compatible with the ProGrade Digital CFexpress Type A 120GB.
Canon PowerShot V1 has an SD-only card slot (no CFexpress support of any type). Its own compatible-cards manual page confirms only SD/SDHC/SDXC card compatibility -- CFexpress Type A uses a physically different connector and cannot be inserted into an SD slot.
What works instead
See all compatible camera for the Canon PowerShot V1 →“SD/SDHC/SDXC memory cards UHS-II and UHS-I cards compatible”
Last verified:
Compatibility inferred from spec rule (citations above are manufacturer-verified)