diff --git a/test/TestOrderBookFork.t.sol b/test/TestOrderBookFork.t.sol
new file mode 100644
index 000000000..fe2deab55
--- /dev/null
+++ b/test/TestOrderBookFork.t.sol
@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: CAL
+pragma solidity =0.8.19;
+
+import {Test, console2} from "forge-std/Test.sol";
+import "src/interface/unstable/IOrderBookV3ArbOrderTaker.sol";
+import "lib/rain.interpreter/src/interface/unstable/IExpressionDeployerV3.sol";
+import {
+    IOrderBookV3,
+    OrderV2,
+    EvaluableConfigV3,
+    OrderConfigV2,
+    TakeOrderConfigV2,
+    SignedContextV1,
+    TakeOrdersConfigV2
+} from "src/interface/unstable/IOrderBookV3.sol";
+
+IOrderBookV3ArbOrderTaker constant POLYGON_NHS_ARB_CONTRACT =
+    IOrderBookV3ArbOrderTaker(0xD4A7e432b5E56535F0a671144551ef833dc2c569);
+
+IOrderBookV3 constant POLYGON_NHS_ORDERBOOK = IOrderBookV3(0x16d518706d666C549DA7Bd31110623B09eF23AbB);
+
+bytes constant SELL_ROUTE_NHS =
+//offset
+    hex"0000000000000000000000000000000000000000000000000000000000000020"
+    //stream length
+    hex"0000000000000000000000000000000000000000000000000000000000000042"
+    //command 2 = processUserERC20
+    hex"02"
+    //token address
+    hex"84342e932797fc62814189f01f0fb05f52519708"
+    //number of pools
+    hex"01"
+    // pool share
+    hex"ffff"
+    // pool type
+    hex"00"
+    // pool address
+    hex"e427b62b495c1dfe1fe9f78bebfceb877ad05dce"
+    // direction 1
+    hex"01"
+    // to
+    hex"D4A7e432b5E56535F0a671144551ef833dc2c569"
+    // padding
+    hex"000000000000000000000000000000000000000000000000000000000000";
+
+contract TestNHSOrderBook is Test {
+    string constant FORK_RPC = "https://polygon.llamarpc.com";
+
+    // Choosing a block right before limit orders were removed.
+    uint256 constant FORK_BLOCK_NUMBER = 50906935;
+
+    address constant NHS_ORDER_OWNER = address(0xf098172786a87FA7426eA811Ff25D31D599f766D);
+    address constant NHS_APPROVED_EOA = address(0xf098172786a87FA7426eA811Ff25D31D599f766D);
+
+    function selectPolygonFork() internal {
+        uint256 fork = vm.createFork(FORK_RPC);
+        vm.selectFork(fork);
+        vm.rollFork(FORK_BLOCK_NUMBER);
+    }
+
+    function getVolSellOrder() internal pure returns (OrderV2 memory) {
+        /// @dev https://polygonscan.com/tx/0x470130cf72761778fbd0951364cb4c02396fccd514021d6024ab93ba3e1a2fbf
+        bytes memory orderData =
+            hex"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";
+
+        (,, OrderV2 memory volSellOrder,) = abi.decode(orderData, (address, IExpressionDeployerV3, OrderV2, bytes32));
+        return volSellOrder;
+    }
+
+    function getLimitSellOrder() internal pure returns (OrderV2 memory) {
+        /// @dev https://polygonscan.com/tx/0xb0575c41e49bdb5275186a41d0231b4c80b4776e78bc20f331971cc5d771d3ec
+        bytes memory orderData =
+            hex"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";
+
+        (,, OrderV2 memory limitSellOrder,) = abi.decode(orderData, (address, IExpressionDeployerV3, OrderV2, bytes32));
+        return limitSellOrder;
+    }
+
+    function testNhsLimitVolArb() public {
+        selectPolygonFork();
+        OrderV2 memory limitSellOrder = getLimitSellOrder();
+        OrderV2 memory volSellOrder = getVolSellOrder();
+
+        OrderV2[] memory orders = new OrderV2[](2);
+        orders[0] = limitSellOrder;
+        orders[1] = volSellOrder;
+
+        takeOrder(orders, SELL_ROUTE_NHS);
+    }
+
+    function testOnlyVolArb() public {
+        selectPolygonFork();
+        OrderV2 memory volSellOrder = getVolSellOrder();
+
+        OrderV2[] memory orders = new OrderV2[](1);
+        orders[0] = volSellOrder;
+
+        takeOrder(orders, SELL_ROUTE_NHS);
+    }
+
+    function takeOrder(OrderV2[] memory orders, bytes memory route) internal {
+        vm.startPrank(NHS_APPROVED_EOA);
+
+        // For all orders.
+        uint256 inputIOIndex = 0;
+        uint256 outputIOIndex = 0;
+
+        TakeOrderConfigV2[] memory innerConfigs = new TakeOrderConfigV2[](orders.length);
+
+        for (uint256 i = 0; i < innerConfigs.length; i++) {
+            innerConfigs[i] = TakeOrderConfigV2(orders[i], inputIOIndex, outputIOIndex, new SignedContextV1[](0));
+        }
+
+        TakeOrdersConfigV2 memory takeOrdersConfig =
+            TakeOrdersConfigV2(0, type(uint256).max, type(uint256).max, innerConfigs, route);
+
+        POLYGON_NHS_ARB_CONTRACT.arb(takeOrdersConfig, 0);
+        vm.stopPrank();
+    }
+}