Are Hermes Bags Always Stamped.

I have a garden party tote that is not stamped, and I can't seem to find the stamp on my Medor pochette (someone please enlighten me if you know where it is!)
 
I've had Birkins and Kellys missing the year stamp. I asked Claude about it once and he just kind of shrugged his shoulders and said it happens sometimes, and it was really of no importance. The bag was important and not the stamp.
 
^^thanks, will look yet again...i was practically turning it inside out, checking the underside of the leather band with the studs...!
 
Hermesaholic, my Bearn wallet is stamped in silver "Hermes Paris" on the centre of the top bill slot.
Is there supposed to be a year stamp also?
I have nothing that I can see in the zippered compartment?
 
duchessofs, for Bearn, unzip the coin compartment.
Look at the inside of the fold, sometimes the year stamp is faint ... the craftman is alphabet & numbers..saw it?!