Yes, that's the normal colour of a coin that's been buried a long time. Ignore the hype of eBay sellers - they will claim all kinds of weird and wonderful things as "rare", "unique", etc. The recut of dates was usually done on the final figure of the date, as the date punches for the dies were either 18-- (last two digits blank), or created for a decade, like 186-. When it came to the final digit on the dies, yes they would punch them in individually, which is why you see such a variety of spacings and angles of final digit. This is especially true for 1861 and 1862, which was a combination of 1) the early days of bronze coinage production and 2) very high mintages (which was also the case in 1863, then it tailed off dramatically). Bottom line - a recut 1 over 1 on a particular die for this particular date is not terribly exciting though it is interesting if you collect such things. A worn one for £26 obviously attracted one such collector, so if you put yours on eBay you might attract another, who knows? There's a lot of odd spacings on the 1864 as well, especially the crosslet. Many of the wider spaced 4's are barely visible.