Kitchen Cabinets Being Refurbished

Luckily when I bought my home the kitchen cabinets were still original and hadn't been painted. They were built on site so they are solid wood with plywood/veneered doors. Very sturdy with no sagging shelves after 53 years!!! They don't make them like this anymore.
When I was shown the house the realtor said everyone before me complained that they would have to gut the kitchen since the cabinets were so old!!! I was ecstatic to see original cabinets.
Back in 1959 the cabinets were shellacked with Amber shellack so I wanted to restore the worn shellack and clean off 50 years of grime and grease. I used Citrus Solvent and 0000 steel wool to clean the wood, 3 coats of amber shellack with light steel wool sanding in between coats then left the last coat unsanded for a glossy shin. My feeling is after a few months the shin will diminish.