WANT to invest in a different form of art? Try cel art. A cel is an original single frame painted for use in the production of an animated film. Between 12 to 24 are used per second in a film. Costs range from $5,000 to $70,000. One of the reasons for the high price is that not many of the older cels from pre-war films are still around. Years ago, studios never kept them. Animation Cel Art Hongkong Ltd opened a gallery in December last year following the success of two exhibitions. They estimate that the value of the pieces rises on average between five and 10 per cent a year. NOMURA Selection Fund is seeking a listing on the Hongkong Stock Exchange. The umbrella fund, started in December last year, consists of five equity funds investing in fast-growing economies of the Asia-Pacific, a global bond fund, and a liquidity fund. The group markets its fund as a versatile investment tool, in that investors can select and switch funds, and hopes it will be listed by summer. CAPITAL Conferences and Seminars is holding a seminar for private investors and financial advisers on June 28 and 29. The seminar, entitled ''Wealth Preservation in the '90s'', will have a number of financial experts telling individuals what they should consider when making an investment. TOWRY Law International is holding a series of retirement workshops, on Tuesdays and Thursdays at the Hilton Hotel in Central. MATHESON PFC is holding two seminars for all new expatriates in Hongkong. The first is on Private Portfolio Bonds on June 3, and the second on June 8.