Ok thank you gents for the prompt and helpful replies.
Seller in Australia has also now confirmed that #82342054 is a LHD switch assembly which tallies with your assessments. The strange thing is this is part of his collection of ex Australian Fiat/Lancia dealer NOS parts, which makes you wonder why would an Australian Lancia dealer have a new LHD stalk switch assembly in their parts stock? Unless perhaps later series 3 RHD Betas were imported with LHD stalk switches and steering columns/shrouds due to a lack of or phasing out of RHD switch parts by Lancia?
Guy, your clarification about RHD cars traditionally having indicator stalk on RHS to facilitate left hand gear change tallies with my understanding.
Thanks also to clarification from Nigel and Rosscorsa that the 82347468 part is the RHD version one. (02 for Coupe and 04 for HPE). I`ll keep an eye out for that part number in case a NOS RHD one miraculously surfaces!
I have contacted forum member Chris (VXMan) who has advertised some parts for sale including several stalk switch assemblies, which he is going to do a bit of a service on, (check all switch functionality by resistance measurement, clean spade terminals and contact surfaces, smear with dielectric grease and "check, clean and grease the indicator self cancelling bits"). So I might get a used switch from him that is at least guaranteed to be working OK. The original indicator stalk switch on the Beta coupe still works but feels very fragile and worn.
I will follow up the with Lancia SA suggestion, although I have never bought anything from them and find their website a nightmare to navigate! Felix Furtak seems like a nice guy but previous enquiries about replacement Beta Coupe upholstery cloth went around in circles and eventually fizzled out because he was too busy with expansion building work, understaffed and could not find the parts in the warehouse to check colour, type etc. All very frustrating from my perspective!
Cheers,
Andrew