I am with Cappy on this! In most cases when a manufacturer states the product is aged 18 years for example as is with the cusano 18 and the Gurkha legend, it is not talking about the finished product being put to age for that amount of time, but the tobacco leaves, usually the wrapper leaves. I believe the cusano and gurkha binder and filler are actually not as old, but the are aged I want to say around 7 years?
I know plenty of folks here have more info, so I will leave it to them, but when seeing an advertised aged cigar like the c18 it speaks to the wrapper age and not the finished product.