Thanks, gents, for your knowledge and opinions.
Victrix, I tried accessing those articles before and most are now defunct. I will do a general search for that title and see what comes up.
I had seen that pic from Neumann's as well, so i remain confused. Peterson shows a drawing of a sword exactly matching my sword, with bird head solid brass hilt, no grooves or pommel, "rectangular" guard and a blade measuring exactly 22". Next to that pic, he had another brass hilted sword, so perhaps there were several patterns? As far as the word 'hirschfanger', the generic form is a straight-bladed field piece, typically with plain brass hilt, so I would say that the sword discussed is still in the ballpark-
Hangers of the 17th and early 18th c. were by definition 'hunting swords. Likewise, I don't know if the illustrator for this depiction saw the definition of 'plain straight brass hirschfanger' and took artistic license. Then again, I don't know if Peterson could also be incorrect in his drawing.
Does anyone have H. Peterson's book to print the pages I mentioned above? My skills with the digital camera are terrifying!