"Slices of Quince" 

Catamount Cache-cam

2/24/2001 GA, there are older active virtuals, but they were created as cache boxes and converted to virtual caches later.

Kennesaw Mtn. Virtual Geocache 

GCCE8D GC6D8B GCGWVG have older placed dates. All started as physical caches, had their type changed to earthcache later

Mica City Earthcache

Mingo

9/30/2000   NC oldest cache of the Mystery type   also the oldest active cache in NC  a converted moving cache 
original owner Iungionis https://coord.info/GL2C7

Octopus Garden

Ramapo Tour

9/26/2000 TX       GC1E Tour of Stone Mountain in Georgia was a Traditional until 2003, when the current owner adopted it and altered its type. It's no where near being an old multi. It's an old cache page.

Tombstone

Caches on this list are the oldest active caches of their type that I can find, ->>>looking for caches originally listed in the type.  

Earthcaches were added to the Listing Guidelines in Feb '05. There are a number of Earthcaches with older placed dates,  converted from some other type.  
The first cache published with the Earthcache type is geoaware's Earthcache 1, GCHFT2, 1/10/2004 New South Wales OZ.


Oldest Active of each Cache Type, USA.list-details-1wr9x6v{text-transform:uppercase;font-size:12px;}@media screen and (min-width: 600px){.list-details-1wr9x6v{font-size:1.25rem;}}.list-details-1wr9x6v.shareable{color:#87705a;}.list-details-1wr9x6v.public{color:#00b265;}Public

Oldest Active of each Cache Type, USAPublic