Good for you Shane, I'm amazed that it stayed on the shelf for as long as it did, are you hiding from you wife hehehe, I have been try to convince my fiancee that our life would be better with another rifled-musket!
I had an old friend of mine take a look at that bayonet, he has been collecting and repairing original enfields for 40 odd years (mainly 1853), thinks the bayonet my be for an earlier model than the 1853, as it's loose on the barrel, it would be interesing to know what model it was for. He also said the marking E for enfield made it slightly rarer that the Bummingham B , though it this was before he found it was loose on the barrel, which could mean the Enfield was the common bayonet for the model, so it will be interesting to see him again (which I will soon) and find out more about it. I will take a photo of the only markings on the bayonet itself, which is a crown over an E over an 11. He did explain the 11 but I have forgotten, I must take the time to right down the information I get. I could see if there were any markings on the scabbard as it is firmly squeezed into a US patten frog.
Oh I finally got a chance to live fire my PH down the range, it was fantastic, I did a fair bit of group at 50 yards, then the majority of firing at 100 yards with great effect, LOL later in the day we were having a few shots at a 500 yard target, hehehe we didn't hit it but I think with a lot more practice we could, what amused me so much weas that you could fire, let the smoke clear, look up and and see you fall of shot (we did have some one watching on field gl***** so we could make better adjustments to our fire) I usually fire my MkIII .303 that fires a round at about 3 times faster than the P53. My girlfriend fired my friend's wife's .50 cal patch and ball rifle that only uses about 30 grains to throw the ball, and turns out she is quiet a marksman...markswoman. Her first shot hit right on the out side edge of the bulls eye and she rarely strayed far from there with every shot (at 50yards), LOL every time she put the gun down she would shake like a leaf.