Obviously NOT from Yorkshire!
Two ways to look at it, keep it as is if you want to resell it in 20 years time at a (hopefully) reasonable profit. However, if you think that they won't be collectable then, use it now and enjoy it (if you ever can enjoy using a Mitchell ).
__________________
OK jeff-- as its Christmas and the season of good cheer I,ll bite , I'm a yorkie as I suppose you know. Some years ago I went to purchase my first shotgun, I had been told that it would be a hundred pounds by a friend of the seller and when he ( the seller )appeared at the door he was a very old gentleman who gestured me inside. He brought out the gun-- an old but still very servicable side by side-- He told me of his shooting career and how he was getting to old to do it justice hence the sale.
I knew from the start that I would buy the item and eventually offered him the money. He shook his head and said that fifty was ok.
I told him then that if he was a much younger man I would accept but told him that he could have the hundred if he so wished as I didnt want to leave the premises feeling that I had cheated an old/kind man of his dues.
He said he knew what he was doing and that he had once had a bargain gun buy and that it pleased him to give me the same . So somewhat reluctantly I accepted.
I was walking out of the house when he called me to stop saying"Dont walk out with the gun under your arm, the neighbours will likely ring the police--here put it in one of these" He threw me a very old tatty gunslip that he was going to throw away so I placed the gun into it and left.
Later I cleaned the slip up by polishing the brass buckles and neatsfooting the leather straps and nosecone and noticed it was a "Brady". I checked one out the next time I was in the gun dealers and it was priced at a hundred and five pounds. I like to think the old gent knew that too!
Back to reality-- " if anyone can enjoy using a Mitchell" Now let me tell you sir---- Oh sod it ,its Christmas Have a good one mate!!!