Do currency exchange offices in Istanbul accept old US dollar bills?

After visiting around 15 exchange offices at and near the Grand Bazaar, none would accept old-series US dollar bills — not even at a discount or with a fee.

For small amounts of old-series dollars (e.g. $100), exchange offices may offer extremely poor rates. It's best to only bring new-series US dollar bills to Istanbul.

If an exchange office charges a fee (e.g. $1 per $100 exchanged), don't accept it — walk 20–50 meters to the next booth, where you'll likely get a commission-free rate.