The NFT are all digital creations designed by CRYPTOPOWERING. The NFT image could be stamped due to the existence of an STL file. Info. https://twitter.com/Eduardo48236663 STL (Stereo Lithography Interface) DPM (Different Printing Materials) Gold, silver, brass, bronze, steel, titanium, alumide, polyamide, rubber, polypropylene, resin and more materials. The NFT "FLEET" belongs to a series of 30 units. Serial Number : CJS 003 FLT 030