We have a 26500 and unfortunately we couldn’t find any chrome/metallic vinyl to suit our machine.
The best thing we could do was to just print and cut the lettering (or images) on white vinyl and mount that on top of the silver/gold vinyl. gives the same effect really!
Other option is to buy short rolls of silver/gold vinyl (I know MDP supplies do a range), and just try it. It recommends a maximum temp of 80 degrees, but that’s no to say that it won’t work at a higher temp. We’ve regularly turned curing temps higher than advised on certain substrates (roller banner for one) to give what we believe are better results. It voids any manufacturer warranty with the substrate but if it’s a test on a short run then you’ve not really lost much!
Let me know if you do manage to source anything!