Other collectors don't cringe at restoration at all. They realize that jerseys were reused in many cases so restoration, in their minds, shouldn't affect the price. For instance, once a major league team received new jerseys, the old ones were often reused in the minor leagues so, in turn, the name was changed in some cases. Situations like this were commonplace in days past, it was just the way things worked and it is sometimes literally unavoidable. Still, other collectors prefer all-original jerseys.
Repairs are entirely different.
The word repair should be used when referring to a jersey that has had a tear fixed or a stain removed. There are still those collectors who prefer that their jerseys be left in the original condition that they were found in but repairs do not, in any way, affect the authenticity of a jersey. The jersey was either worn by Lou Gehrig or not. Assuming that the repair is minor, it should not have a dramatic affect on the value of the jersey. In many cases, the area of restoration and repair is entirely subjective.