Heres an example of the certificates I make.I also use these for products purchased such as enclosures etc.I use a personal code to represent each individual reptile,a photo of the individual,a date of purchase and my contact details such as phone number and website.
http://www.aussiepythons.com/modules...view_photo.php
The code number for each product is as follows.
BHPm1f203 hatchling M05
BHP=Black headed python
m1f2 =parents=male 1 x female 2
03=year 2003
hatchling M05 = hatchling 05 (male)
With every clutch I will label each individual M=male,F=female or U=unsexed and number them from 01-60 (depending on how many) and mark this on there containers in the shelving rack.I can then easily recognise each individual through records kept on MSA herp.I will also print out all these records of feeds and feed weights,sheds,lengths and weights of the individuals,and this will also be given to the purchaser along with the certificate of quality.
In the case of animals that are bred in colonies or kept together year round the code would look like this.
BD1.303 hatchling U
BD=bearded dragon
1.3=bred from a colony of 1 male & 3 females
03=year 2003
Hatchling U=hatchling unsexed
NOTE:
A clutch of hatchlings kept together with no records being recorded will not have a hatchling number,as can be seen in the Bearded dragon example.I will also substitute hatchling with juvenile,sub adult or adult depending on age of species. 
