diff --git a/tests/test_cpp_base_py_derived.cpp b/tests/test_cpp_base_py_derived.cpp
new file mode 100644
index 00000000000..cbc117f44a0
--- /dev/null
+++ b/tests/test_cpp_base_py_derived.cpp
@@ -0,0 +1,57 @@
+// pybind11 equivalent of Boost.Python test:
+// https://github.com/rwgk/rwgk_tbx/blob/6c9a6d6bc72d5c1b8609724433259c5b47178680/cpp_base_py_derived_ext.cpp
+// See also: https://github.com/pybind/pybind11/issues/1333 (this was the starting point)
+
+#include "pybind11_tests.h"
+
+namespace pybind11_tests {
+namespace cpp_base_py_derived {
+
+struct base {
+ base() : base_num(100) {}
+
+ virtual int get_num() const { return base_num; }
+
+ virtual std::shared_ptr clone() const {
+ return std::shared_ptr(new base(150));
+ }
+
+ virtual ~base() = default;
+
+ private:
+ explicit base(int num) : base_num(num) {}
+ int base_num;
+};
+
+inline int get_num(std::shared_ptr b) { return b->get_num(); }
+
+inline int clone_get_num(std::shared_ptr b) {
+ std::shared_ptr c = b->clone();
+ return (b->get_num() + 3) * 1000 + (c->get_num() + 7);
+}
+
+struct base_trampoline : public base {
+ using base::base;
+
+ int get_num() const override {
+ PYBIND11_OVERRIDE(int, base, get_num);
+ }
+
+ std::shared_ptr clone() const override {
+ PYBIND11_OVERRIDE(std::shared_ptr, base, clone);
+ }
+};
+
+TEST_SUBMODULE(cpp_base_py_derived, m) {
+ py::class_>(m, "base")
+ .def(py::init<>())
+ .def("get_num", &base::get_num)
+ .def("clone", &base::clone)
+ ;
+
+ m.def("get_num", get_num);
+ m.def("clone_get_num", clone_get_num);
+}
+
+} // namespace cpp_base_py_derived
+} // namespace pybind11_tests
diff --git a/tests/test_cpp_base_py_derived.py b/tests/test_cpp_base_py_derived.py
new file mode 100644
index 00000000000..3a36c81fe91
--- /dev/null
+++ b/tests/test_cpp_base_py_derived.py
@@ -0,0 +1,38 @@
+# -*- coding: utf-8 -*-
+# pybind11 equivalent of Boost.Python test:
+# https://github.com/rwgk/rwgk_tbx/blob/6c9a6d6bc72d5c1b8609724433259c5b47178680/tst_cpp_base_py_derived.py
+# See also: https://github.com/pybind/pybind11/issues/1333 (this was the starting point)
+import pytest
+
+from pybind11_tests import cpp_base_py_derived as m
+
+
+class drvd(m.base):
+
+ def __init__(self, _num = 200):
+ super().__init__()
+ self._drvd_num = _num
+
+ def get_num(self):
+ return self._drvd_num
+
+ def clone(self):
+ return drvd(250)
+
+
+def test_base():
+ b = m.base()
+ assert b.get_num() == 100
+ m.get_num(b) == 100
+ bc = b.clone()
+ assert bc.get_num() == 150
+ assert m.clone_get_num(b) == 103157
+
+
+def test_drvd():
+ d = drvd()
+ assert d.get_num() == 200
+ assert m.get_num(d) == 200
+ dc = d.clone()
+ assert dc.get_num() == 250
+ assert m.clone_get_num(d) == 203257