I'm not huge into fountain pens but I like them and saw an aerometric teal green Parker 51 at a flea market and saved it from an old cigar box for a quarter. Anyhow, I filled it and it writes great. After reading about 51's I noticed they made smaller Demi versions (for the ladies) that were apparently identical in all aspects except for size. I can't find any size specs online and I was wondering if anyone knew the dimensions of the two pens. Nothing earth shattering, I like the pen regardless, but I was just wondering. In fact, the Demi may be the way to go for me because I have relatively small hands. Thanks.