Love, love. Not too many phrases more evocative than "siamese cats"! And it seems just right to me that the first letter of each hand-painted word be bright red. Looks professionally sign painted to me, with those juicy little tails at the ends of the S and C.  Double sided, too. I can't imagine driving along and seeing this sign and not pulling over, and looking at it somehow makes me about dalmations, too. Excellent.

24" l x 6 1/8" t x 3/4" d. Very good condition, with more wear to one side than the other, as documented. c. 1940s-50s I would guess.