||xXRepairs to cookie boards come in all shapes and sizes. They can be as simple as a small crack filled with wood filler, to boards that have cracked completely in half and are now held together with a metal band. Some repairs to the boards may be 200-years-old, while others may have been done in the past 20 years. Odds are, this mold was repaired by the baker because he wanted to keep the mold in useable condition.
Most advanced collectors of wooden molds accept these repairs, IF they have been done carefully and are not distracting to the overall design. There are some people who will not touch a mold that has been repaired. That's good for them, but I don't expect that every board, many hundreds of years old, will be perfectly intact and in its original condition.
There are a few factors that determine whether or not a repaired board is worthy of collecting. Most notably, is there something about the mold which makes it rare or desirable? Is it a rare design? Is the mold extremely old? Is it signed by a known carver? Maybe it is just a nice board that interests you? What is important is that you give a repaired mold the once-over and determine its worth to you. Certainly a repaired mold will not command the same price as it would if it were in a non-repaired state.
There is one repair that can be done to a board, and that is refinishing. To me, unless the board is worth (or once worth) thousands of dollars, I won't buy it. Luckily I have only seen a couple of nice boards that have been ruined by refinishing. PLEASE, don't ever let anyone refinish your wooden molds!!
My collection has a few examples of molds which have been repaired (mostly older repairs), and the pictures below show some of those examples.