Question for the Key Experts

[Irish911]

Both my door and ignition keys are different. I am assuming the ignition got changed at some point in the past. I purchased a blank key (for a '70) and was going to rekey the doors to match the ignition and get a second key cut. However, when I received the blank key I noticed (see picture below) that it has only 2 cut ridges running the length of the key (same as my door key) while my ignition key has 3. Were the type of keys changed at some point? Will a lock smith cut that 3rd ridge? I assume it matters since they have different cross section profiles (2 ridges vs 3).

Thanks for any assistance. I don't want to rekey my doors and get a new key cut if they aren't going to work.

[BrentF]

Could it be that one key is actually the valet key, which works on all locks except the globe box?

[Carl Bauer]

Irish,

It looks like you bought a valet key. It won't be able to lock/unlock the glove box.

[M_deJong]

I have mostly the 2 cut type for my cars. The red key is the valet key and it has the extra cut judging from the picture above.

[Irish911]

So it looks like my existing ignition key is actually a valet key. That is great to know. Thank's everyone for their replys and the pictures. I can now go ahead and have the blank cut to match my ignition key and get my two door locks rekeyed with no worries that things aren't going to work.