I have a silver penny 18mm in diameter. It is hand pressed and has the London mint mark on one side ( a long cross with three pellets in each corner). On the other side it has a tudor rose with no crown. It bears the mark MDG rosa sine spiva so I assume it is a queen Mary penny.
What I don't undestand is that all pictures of tudor pennies I can find have a bust of Mary on one side or bear the PZ of king phillip of Spain. Also all pictures I see on
ebay or google images show the mint mark as a cross over a shield or coat of arms, this does not but looks like earlier Edward I pennies. Other pennies I have seen from this time have a crown over the rose, this does not.
Can someone give me the history of this coin and when it was minted? are they rare or commonplace? I am curious because it does not look the same as images I have seen on the internet.