Is This Considered A Poor Mans 1955 DD?

Looks like damage on the first 5. Check the MM for 1955D-1MM-001 on coppercoins.com though.

Some sort of damage but keep searching. Sounds like a great box you came across.

I think that's a die chip in the upper part of the 5.

The poor man's (so called) doubled die is from extreme die wear that affects the outside edges of the date.

But note that on all devices they are affected. Weak wheat lines, die cracks and general all around die wear on all devices facing the rims. This is a BU coin. The extreme over use of the 1950's wheat dies to make every cent possible from these dies are what were are often shaking out heads at when looking at them through an ocular were use today.
Because of the bid DDO that year, collectors tend to look too closely for these. But actually paying a premium for these would actually make you the poor man when you go to sell them. They are common and easy to find. (just interesting)