While it is an enjoyable challenge to try and collect all your accessories from the same period, it is not always practical, nor even possible in some cases. If you intend to actually use your vintage equipment, then you will likely need some items (such as flash units and tripods) from a later era if they are to be of any practical use.
There is probably no limit to the number of compatible accessories available, if you include all those items that were manufactuered after the Iloca range cameras went out of production. And of course you can still buy brand new items today, such as filters, tripods etc, that are perfectly suitable.
Gallery of a few useful Accessories from Later Periods