Perfect birthday gift for the awesome 50 year old. I have hand stamped a heart around the year on the 1974 penny and "50 & Fabulous" along the bottom edge on the back aluminum piece.
I use a real penny so it will tarnish over time as any penny would do. Aluminum is a great alternative to the stainless steel. It will not tarnish or change colors and has a lighter weight than stainless steel.
Due to the hand stamped nature of each piece, being stamped one-letter-at-a-time, there may be slight differences in letter placement and spacing. This is not to be considered a defect. The differences are what gives the unique character to each piece.