I purchased three sets of Darware molds for myself. In the image shared, I show the three different sets, with various degrees of wear. I used the most-worn set ~12 times, and the newest set ~6 times in total. Note the significant product wear and copper oxidation these molds develop over time.This product provides decent quality for the price. Given that real canele molds will cost $25-28 per piece (for a total of $300-336 for a set of 12), these give a consumer with less disposable income a passable solution for making caneles the "traditional" way (i.e. without a silicone mold).These molds are certainly not pure copper with a tin plating on the inside. To advertise the molds this way is disingenuous, borderline deceitful. Mauviel (the "name brand") molds of comparable size weigh ~86g each, whereas these molds are only ~55g (fourth image). It appears that the molds are made from a cheaper metal, with an exterior copper coating and an interior tin lining. The exterior copper finish is beginning to rub off with repeated use, and the inner non-copper metal is beginning to show. The third image above shows this progression; the silver color beginning to show at the bottom of the molds is not normal "tarnish" or copper oxidation (which would present as a more pronounced bluish-green color), but rather the non-copper interior metal beginning to be uncovered. The detailed product description even acknowledges this, stating "each mold has a tin interior and exterior coated with copper for heat conduction." So, if you think you are buying true copper canele molds, buy from a French brand name, not a cheap replica piece made in India with non-standard materials.Despite this fact, the molds are wonderfully functional, and are capable of making a great canele using a proper beeswax/butter coating. I have used them many times and have produced mostly successful caneles. I would recommend them for their functionality, with the caveat that nontraditional materials are used in its construction.