Just thought I'd put up a PSA that there are a few (I have no idea how many) 40mm grey Dan Henry 1970s still available for sale from DH. I shot them an email last week, and received a response that they still have a few left in their NJ warehouse. Three days after payment it's on my wrist!
A friendly FYI for anyone that feels so inclined. They show as sold out on their website, but if you email DH directly they'll send you a paypal link to make a payment. They shipped mine the day after I paid.