I have 4d blue imperforated side face on white card . i was wondering if any body can tell me much about it i brought it from a lot with other state stamps only wanted them for this stamp did not know it was on white card.Is it a sample stamp that was included in presentation sets supplied to members of states legislatures.any info would be great i can not find much info about it only info i have found about it is in SG CAT specimen and presentation reprints.
Thanks any help appreciated
![Image](http://i887.photobucket.com/albums/ac79/andrewburke/4dblue.jpg)