1995 Proof Quarter with Different Mintmark

[NeoMetal]

I recently got a 1995 proof set still sealed. While checking the grades closely I noticed that the quarter's mintmark is very different than the rest of the coins or other proofs of that year. On Variety Vista's mintmark table with images this quarter has what looks closest to the large 1928 mintmark variety. There is similarities in shape and serifs but like the 1928 it has a much thicker center than the other 90s type. Has this been seen before or do I have a new error/variety?

[NeoMetal]

Here's the mintmarks from the set. The first is the quarter while the 2nd is the cent, 3rd the nickel, 4th the dime, and 5th the half.

[JamesWiles]

After 1990 the mintmark was added to the master die rather than individual working dies. In the mid 90s the mint began doing new reductions each year from the plastine model so the mintmark was added to the model. There was no consistency of mintmark style from denomination to denomination, sometimes not even year to year. In 2001 the mint begin to standardize the designs and the mintmark styles.

[NeoMetal]

Thanks James. I knew about the mintmarks being added to the master dies after 1990 (no more RPMs) and being added to the plastine models a few years later, but I didn't know that there was that much difference from denomination to denomination until 2001 when they standardize the designs and the mintmark styles as you say. I'm always learning and researching all that I can but this one had slipped by me so far. Thanks again.