No 600 Delux

This is my MCelroy key. I will not say what I paid for this but I am the second owner if you do not count the SK's son who had no use for it.
There are no holes from a tag, metal or otherwise, this key has only ever had the small stricker as its identifier.

Tom from http://www.artifaxbooks.com/mcelroy.htm said its a 600, thanks Tom for the info.