is my shield worth anything?

so i wanna buy a new shield cause i had my old one for a while and i don't like how it looks but i was wonderin if u guys could tell me if my old shields worth anythin, here are its stats-

Tower Shield
armor 16 (req 8 strength)
received damage -2 (while in stance)
received damage -4 (chance 16%)

merchant food

perhaps 3-6k in ascalon?

merc to save time though