without pictures and detailed descriptions of all of the markings on it it is incredibly difficult to make an accurate guess as to what it may be. picture is worth a thousand words... 4 sentences of 2nd hand information speaks a few less I'm afraid.
ignore my complete lack of capitalization. I still have no problem correcting your grammar.
I never said half the crap people said I did-Albert Einstein
You can't believe everything you read on the internet-Benjamin Franklin
Bean counters told me I couldn't fire a man for being in a wheelchair, did it anyway. Ramps are expensive.-Cave Johnson.