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.

My First Key

Many years back (say 1967) I was at the Englishtown Auction with that months fortune. I bought this key, the best I recall is it came from a railroad station that was torn down. At that time I had a realistic DX-16o and dreamed of my amateur license.




Any ideas on the history of this key?