Identify Fob Manufacture

I have the following remote system fob in my 50 Mercury,( see attachment ) I don't have any info on it and would like to purchase an extra fob and possible download a manual but have been unable to find any images on the net. Do you recognize this fab and know who the manufacture was please. The three keys on right side are numbered I,II,III and the other IV.

 

Crawl up in your merc... lay on your back and look up around under the dash near the column... should be able to find the brain and it should have the info on it.

 

Most reputable key shops can hook you up.