Lou Whitaker inscription
 

I have this awesome Lou Whitaker signed JD McCarthy postcard he signed back in 1979. He inscribed the date, his ROY award, his nickname, and "Good Luck". I love it. However, I can't figure out what the bottom right inscription is. It looks like it says #UWO but I have no idea what that could mean. Plus it has a wavy line over it that may or may not be part of the text. Anyone have a clue?

https://i.ibb.co/7NGXH4N/Compress-20...82910-0222.jpg

It certainly looks like a # (hashtag or phone pound sign, signifying a number) which made me look up his rookie uniform number, which appears to be 43. Could that be a 4 and a 3, oddly written?? Baseball Reference shows he wore 43??

Hard to make out but I am seeing #UNO as in #1

Oh man, I think that's it! Great call!

Doh......and I speak little Spanish....