How did Luther view relics, like the 'preserved head of John the Baptist'? According to wiki 

Roman Catholic tradition holds that the head on display in San Silvestro in Capite in Rome is that of John the Baptist, discovered for the second time, as also maintained by Pope Benedict XVI in August 2012.

What the Pope said:

The pope also spoke about a fragmented piece of St. John's head that is kept as a relic in the Church of Saint Sylvester in Rome.
“In the Roman Martyrology, reference is made to a second finding of the precious relic, transported, on this occasion, in the church of San Silvestro in Rome. These little historical references help us to understand how how and deeply St. John the Baptist is venerated.”

There is also some similar Islamic tradition about this relic mentioned there.
My question is what did Martin Luther think about the 'preserved head' and other equally impressive holy relics?
Luther clearly thought all relics were ridiculous nonsense and evidences of a very degraded sense of spiriituality.


   “It is claimed that the head of St. John the Baptist is in Rome, although all histories show that the Saracens opened John’s grave and burned everything to powder. Yet the pope is not ashamed of his lies. So with reference to other relics like the nails and the wood of the cross—they are the greatest lies.” (Martin Luther's Works, Vol 54.131)


Furthermore, at the time of Luther, the superstition surrounding relics seems to have really been highly imaginative that only an unspiritual mind could ever conjure:


  “Certain men have impudently boasted that they possess a feather from the holy angel St. Michael. The bishop of Mainz claims to have a flame from the bush of Moses. So in Compostella the banner is exhibited that Christ had in hell, and likewise the crown of thorns, the nails, etc., and also some of Mary’s milk.” (Martin Luther's Works, Vol 54.247)