Collectors please note! Some facts about the route Nantes to Orléans

Over the route, we shall be passing through the following départements:
Loire-Atlantique (44)
Maine-et-Loire (49)
Indre-et-Loire (37)
Loir*-et-Cher (41)
Loiret (45)
We shall pedal through two régions:
Pays-de-la-Loire
Centre
And we shall see 5 chef-lieux (county towns), all on the River Loire:
Nantes
Angers
Tours
Blois
Orléans
We've done 49, Pays-de-la-Loire and Angers before, but the rest are new!
*Note the missing e. This is a different river: le Loir, not La Loire, altho we don't get to see it.