Just to add to the discussion I will post the ones I have.
These were purchased directly from Kent Spaulding(K&S) Books Alpine Texas.Time frame 1984-1987.I would see Kent at the Houston Gunshow and I also did mail order with him.
He offered Two SEAL TEAM 2 patches.One dark blue the other light blue.
He had these made in Taiwan where the bulk of his stock was made.Im sure various time frames there were variations in material and construction.These were somw of his early runs.
He produced anything thay was made during the Vietnam war and was often contacted to make patches for units or associations for units who served in Vietnam.He did a lot of the REcon Team Patches,UDT,SEAL,etc.
Note the base material and a common factor in his insignias produced were a wax paper type stabilizing material. could also be removes loose if wet or washed.
I have had these as examples and space fillers due to Team patches being very scarce to find.
I'm always suspect of these type patches being associated to more modern Team 2 use or affiliation unless they come right from the Source.