Thank you to @Dan Morris and @Gregory for their help with the Monty Python "Meaning of Life" cast-signed photo in my previous post.  Although not authentic, I am grateful the dealer honored his COA and provided a refund despite the purchase being twenty years ago.

My other Monty Python item is the below SIG set (missing Graham Chapman) displayed with the "chase" cards from The Holy Grail collector card set.  These signatures look more consistent with the SIG set shared in my previous post by @alan david munns (noting the Michael Palin is definitely a different style).  These signatures were acquired through multiple sellers on eBay so it is quite possible some may be authentic while others are not.

Please share opinions and comments on this set.  Thank you in advance to everyone on this forum who share their experience and knowledge.