Union Pacific film railroad spike

From: "Jack Chipperfield" jc224@sussex.ac.uk

... I have recently come into posession of what seems to be a novelty railroad spike for the film Union Pacific. I have searched high and low on the internet and cannot seem to find anything about it other than on your website, The one I have is slightly different to the one you feature by way of the fact it is inscribed with

The David Rose Paramount Convention 1939

The other engravings match the ones your pictures show. I fully expect it not to be a collectible item at all but i woulld be curious to find out how it arrived hear in England. iIf you could give me any guidance or point me in the direction of someone that could i would be most greatful,

—Jack Chipperfield