Version 4 is available on DLS for the three Whistle Signs.
<kuid2:324956:100418:4> Invisible Whistle w/Horn Seq V4
<kuid:324956:100900> Whistle Sign W w/Horn Seq (L) V4
<kuid:324956:100897> Whistle Sign W w/Horn Seq V4
The invisible sign has been updated to V2
<kuid2:324956:100327:3> Invisible Whistle w/Horn Seq V2
These are the same as V4, but with a taller sign
<kuid2:324956:101465:2> Whistle Sign W w/Horn Seq (tall) (L) V1
<kuid2:324956:101454:2> Whistle Sign W w/Horn Seq (tall) V1
<kuid2:324956:100418:4> Invisible Whistle w/Horn Seq V4
<kuid:324956:100900> Whistle Sign W w/Horn Seq (L) V4
<kuid:324956:100897> Whistle Sign W w/Horn Seq V4
The invisible sign has been updated to V2
<kuid2:324956:100327:3> Invisible Whistle w/Horn Seq V2
These are the same as V4, but with a taller sign
<kuid2:324956:101465:2> Whistle Sign W w/Horn Seq (tall) (L) V1
<kuid2:324956:101454:2> Whistle Sign W w/Horn Seq (tall) V1