Eyecup for Canon EOS 1?

Does anyone know what is a good replacement for they eye cup on a Canon 1? Can I use the one for the 1n? Lost mine and now I can't find it. Having so much fun shooting with this in the past few months so I'm looking to replace the eyecup. Thank you.

I'm pretty sure that the Canon Ec-II eyecup, which is still available, can be used on all of the EOS-1 film cameras. Fortunately, it doesn't cost much.

Thank you, ordered one at a cheap price. We will see how it goes.