UPDATE – Apparently gummed brown paper tape is still available and should work!
Edited By Nick Clarke 3 on 28/04/2022 16:13:01
Certainly is and certainly does 
Not so sure about acrylic varnish in this specific usage – not tried it in this fashion but it may not flex as well as ordinary varnish. How the water based varnishes will work is unknown either.,
Been a long time since I did this but it does work really well.
Tug
PS Nick, if you spray the 'object' first and then apply the image surely that reverses the image. I recall someone telling me they had done similar but sprayed the varnish onto a magazine page (over specific image) first – once dry the paper is soaked off and the 'transfer' – varnish layer is applied to the 'object' with further varnish.
Edited By Ramon Wilson on 28/04/2022 17:49:05