What Norwood scale is this? The first pic is me at 40 the second is when I was 28 years. (Photos)

If you are losing hair and want treatment options you should schedule a consultation with a doctor.The information you have is very limited and simplified and may not reflect realistic goals and expectations.Your photos show you may be heading towards a Norwood 6.

It may not be possible to achieve your year old self hairline or density.  You will need more than one transplant to achieve your desired look,  Speak to a hair restoration Dr. about all your options and what a realistic expectation may be.  You can have a successful transplant and outcome with the right planing.  

Based on your current photo you are class 5a-6 and appear to be a very good candidate for Hair Transplantation.Depending on your donor supply there is room for 3000 plus grafts.

 In the last 12 years, you have progressed from what looks like a diffuse pattern hair loss with a low-sitting hairline to a Norwood 5 at 40 years old.  The hairline at 28 years old picture is closer to a 3 but I sense that there is a see-through component in the areas that today are much thinner.  The 28 year-old photo doesn't show the top of your head so it is difficult to compare them directly. You cannot do a complete restoration on a Pattern 5 in one day but you can restore you frontal scalp and hairline similar to the younger photo with somewhere between 1500-2000 grafts.  Our best recommendation would be to have a consultation with a qualified hair restoration specialist to determine your best course of action.  Also, medical therapy may be a great help for you to maintain your native hair and avoid needing further work in the future.

Your hair loss pattern that is evident at age 28 and 40 is Norwood Class 5 with a tuft in the frontal forelock region. You appear to have good quality hair and very curly. Transplanting curly hair takes special consideration. Do your research well and choose a qualified full-time hair restoration surgeon.

You have a Class 6 pattern with a persistent frontal forelock. The progression you showed over the years is consistent with this pattern. The forelock is good to have and it may remain as you get older. A transplant may be worth considering