You have an old and very nice katar – congratulation. The midrib on the blade is the ‘Kundalini flame’ or the ‘Tree of life’ springing from a lotus bud.
I agree with RSword that the question about etching or not is a difficult one. You know what you have, but can’t be sure of what you will get. Normally, if the pattern is very week, I would etch the blade – but the decision is yours.
I am not sure that it is umbrellas shown on the side guards; my guess is that it is flowers, but I am not sure. Have a look at the picture shown, do you think it is umbrellas or do you think it is flowers? I think they are flowers.
It may be easier for you to see if I add the picture - sorry
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