How to mount Type 12 file system

Any suggestions as to how to access this disk?

root@ThinkPad:/mnt # gpart list ada1
Geom name: ada1
modified: false
state: OK
fwheads: 16
fwsectors: 63
last: 151396799
first: 63
entries: 4
scheme: MBR
1. Name: ada1s1
   Mediasize: 77515128832 (72G)
   Sectorsize: 512
   Stripesize: 0
   Stripeoffset: 32256
   Mode: r0w0e0
   attrib: active
   rawtype: 12
   length: 77515128832
   offset: 32256
   type: !12
   index: 1
   end: 151396798
   start: 63
1. Name: ada1
   Mediasize: 77515161600 (72G)
   Sectorsize: 512
   Mode: r0w0e0

I thought it had been formatted as NTFS under Windows, but gpart does not show this.
Partition type !12 is "FAT32 with int13h extensions" according to this page:

Are you sure you formatted it as NTFS? It would show as ntfs (partition type !07 using the numbers) in the gpart(8) output if it was.

I didn't format the disk myself - it's one I picked up at a junk store. If I try booting up from it, it says NTLDR is missing, that's why I thought it was NTFS formatted.

I have mounted it now as -t msdosfs, but I'm surprised at it's layout since gpart identifies it as a 72GB disk and a rescue partition is normally only a few MBs.