Mark,
There should be four serial numbers on a LindNer Daly of that era - one to the rear of the trigger guard, one on the barrel flats, one on the action flats, and one on the interior of the forend iron. There will also (usually) be a smaller-font fifth "serial number" ahead of the barrel flats near the forend lug. This last number is generally 200 or so digits greater than the serial number of the gun.
It would seem a large coincidence that the gun is mismatched and the serial numbers by chance end in the same two digits. #853 would be late number for a damascus gun but other guns have been recorded in that range. There are several possibilities here, including the engraving error you mentioned.
In regards to the model - does the gun have extractors or ejectors? Does it have a dolls head extension or a cross-bolt locking mechanism?
With the answers to these two questions I can tell you what model you have?
The gun's value will depend on the above, along with condition (especially of the barrels) and stock dimensions.
If you can post a picture that would be especially helpful.
Good luck,
Ken
