I may help a little. My granddad began selling Oliver horse drawn implements in the early 30&#039;s. I do not think the number 10 goes back to the 1800s. I have a price list  from cira 1937 and it lists the no. 10 at $13.10 wholesale. I know this plow was produced through 1945. In the 30s Oliver sold approx.29 types of walking plows. You did not say what parts you needed but if you are close to an amish blacksmith he can probably help you. If you can tell me what parts you need I may can help. The no. 10 was not too popular in our region. My granddad sold mostly nos. 20,19,40 and slat12SB.<!-- s;) --><img src="{SMILIES_PATH}/icon_wink.gif" alt=";)" title="Wink" /><!-- s;) -->